









Beta85X 4K Whoop Quadcopter (4S)
Beta85X series is out of stock now, but you can try the new pusher style X-series drone - Beta85X V2.
Beta85X 4K 4S Whoop - it is undoubtedly the smallest 4S 4K drone. Sufficient inventory and prompt delivery.
Since YKS has shared his cinewhoop 4K with a stunning videography, people are fascinated in 4K whoop. So here we are. A real 4S 4K Beta85X whoop!!! Upgraded F4 V2 FC with BLHeli_32 16A ESC, using single N-channel MosFETs, makes the structure and performance more stable and support 4S power definetly. Mounting with Tarsier 4K camera, great choice for cruising, so you can get tons of fun in this cine whoop.
Awesome flight footage of Beta85X 4K by FPV24.
Bullet Point
- F4 V2 FC board has added extra 4 pluggable ports for ESC, VTX, RX and LED board, convenient installation and decreasing the dislocated PIN mounting.
- High performance STM32F405 processor FC boards and tuned BETAFPVF405(BEFH). Faster input signals with lower latency and higher update rate are reachable.
- Using single N-channel MosFETs on ESC board which have a lower inner resistance. It is dual MosFETs on the original BLHeli_32 ESC board.
- Soldering with 25V/220uf electrolytic capacitor, for protecting ESC board, reducing the defective rate caused by the instantaneous high voltage.
- Installed with Caddx Tarsier 4K camera with ND8 fliter which supports APP setting and switchable resolution setting of 4K, 2.7k, 1440P, 1080P.
- Upgraded 1105 motor from 6000KV to 5000KV, with a light weight but definitely will give you extreme power and speed. Motor comes with cable connectors.
- Durable and light enough frame is customized for the Beta85X. To increase its stability, we specially add an extra stiffener brace of carbon fiber. Whole drone no soldering or tinkering necessary.
- 450mAh 4S high rate battery is recommended by default. But pilot could also use their own batteries with battery strap. Optional and affordable.
For 85mm brushless whoop drones, there are 4 versions for your choice - Beta85X FPV, Beta85X HD, Beta85X 4K and Beta85X for GoPro.
Specification
BETA85X SPECIFICATIONS
- Weight: 88.6g (without battery)
- F405 V2 Flight Controller and 16A BLHeli_32 ESC
- Motors: 1105 5000KV with connector
- Props: 2" 4-Blades Props
- Camera: CADDX Tarsier 4K
- Canopy: Canopy for Tarsier 4K camera
- Receiver option: Frsky XM+ / DSMX / Futaba S-FHSS / Flysky / TBS Crossfire / PNP
- Recommend battery: 4S 450mAh Battery (Not including)
- 5.8G FPV antenna
- Flight time: 4min - 6min with 450mAh 4S battery
FC SPECIFICATIONS
Find more details about this F405 V2 FC in another page.
- CPU: STM32F405 (Overclock to 240MHz)
- Six-Axis: MPU6000
- Size: 26mm x 26mm, whoop mounting pattern
- Firmware version: BETAFPVF405(BEFH)
- OSD: Built-in BetaFlight OSD (STM32 controls OSD chip over SPI in DMA mode)
ESC SPECIFICATIONS
Find more details about this BLHeli 32 ESC board in another page.
- Support BLHELI_32
- Support PWM, Oneshot125, Oneshot42, Multishot, Dshot150, Dshot300, Dshot600, Dshot1200
- Input voltage: 3-4S lipo
- Cotinue current: 16A
- Peak current: 19A
- Firmware target: BETAFPV-16A-32bit
- MCU: STM32F051K66
Camera SPECIFICATIONS
Find more details about this Caddx Tarsier 4K camera in another page.
- Weight: 19.5g
- FOV: 4KF 2.8, FOV 150°(16/9), FPV FOV 165°(4/3)
- Lens: Dual lens 2.8 / 12Mega
- Image Sensor: 12M SONY sensor
- TV System: NTSC / PAL, can be changed
- Anti-Shake: Hardware anti-shake
- Scene Mode: Auto / Personage / Scenery / Defog
- Recording Timing Larm: OFF / 1mins / 3mins / 5mins / 10mins
- Horizontal Resolution: 1200TVL
- Image: 16:9 / 4: 3 (changeable)
- Camera OSD: Seperate OSD
- The camera tilt angle is switchable from 20 degree to 30 degree with ND8 fliter.

WHAT HAVE DONE TO SUPPORT 4S?
This Beta85X has upgraded in individual parts like FC, ESC, Motor, which can support 4S power with a steady performance and bring you into a glorious FPV world.
F4 FC & BLHeli_32 ESC
- Support 4S Power. Written for ESC's that utilize 32-bit MCU. With the increase in processing power, faster input signals with lower latency and higher update rate would be possible in BLHeli_32, such as Dshot1200!
- Using single N-channel MosFETs on ESC board, witch have a lower inner resistance. It is dual MosFETs on the original BLHeli_32 ESC board.
- Current sensor included.
- ESC is mounted on the frame by screws and connected with FC boards by cables.
Last Version: The performace of the ESC is limitted and could not stand 4S power on 85X for a long time. Besides, the ESC is connected to the FC board by header pins. When pluging the battery, the ESC will loose with the FC board and cause circut shot.
Power Capacitor
Soldering with 25V/220uf electrolytic capacitor, for reducing the defective rate caused by the instantaneous high voltage.
Last Version: Not power capacitor included, which have the risk that the permanently damage on ESC by impulse voltage when plug the battery.
1105 5000KV Motor
Lower 5000KV for new Beta85X 4S, which could support 4S power which won't cause the issue of overheat or burn (maybe the ESC). Also change motor cables from 30AWG to 28AWG.
Last Version: 1105 6000KV motors with 30AWG cables. In 4S power status, the motor will be overheat and damaged. Which may cause the burnt on the ESC.
Frame Stiffener Brace
The stiffener brace of carbon fiber can reinforce the Beta85X frame, avoid unstability caused by too strong power when Beta85x is flying.
Last Version: No stiffener brace included, which would result in seriously vibration on 4S power.
Caddx Tarsier 4K Camera
Tarsier camera is the first DVR boards that could support 4K@30fps recording. Here is the basic manual for you to recording when get this Beta85X 4K drone.
There are 2 buttons on the DVR board. One is for wifi and recording. The other one for power and recording video mode.
Short Press | Long Press (5-8s) | |
Wifi/Record Button | Start/Stop Recording | Start Wifi |
Power/Mode Button | Switch Video Resolution | Turn on/off Camera |
There are 2 LEDs to indicate the recording status.
Flashing | Flash Solid | |
Wifi LED | Wifi is power on and not connected | Connected |
Mode LED | Recording | Not Recording |
How to set up the Tarsier 4K camera? Please watch the video edited by Nate Payne firstly. For more details about this camera, please browse the official Caddx Tarsier page and download the Tarsier Manual here.
Also, there is a CADDX Tarsier APP on Apple Store (for IOS phone) or Google Store (for Android phones). Through the APP, you could change the settings like Metering, White balance, EV compensation, IOS limit, Sharpness, Contrast, Saturation.
Video Quality and Shooting Tips
We care about mostly is the video quality of this 4K drones. Here is some you must know about and some advice for a perfect video.
4K@30fps VS 2.7K@60fps
The frames per second of the Caddx Tarsier camera is 30fps on 4K mode. It is suitable to fly slowly and smoothly. But if the drone flys quickly or turns around, the scenes seems be out of focus and fuzzy. At this time, we would high recommend you to shooting in 2.7K@60fps.
Discussion about 4K/2.7K/1080P video quality on Facebook. Do we really need 4K video for micro drone?
Note: How to change the Tarsier mode between 4K and 2.7K?
You should change the recording resolution through the Caddx APP. The other method is just short press Power/Mode Button, as show in the image above. The mode is indicated by the color of the Mode LED.
Mode LED -> Red -> 4K mode
Mode LED -> Green -> 2.7K mode
Jello and Vibration
The 85X drone is tuned carefully to avoid vibration and it should be no jello on the video. BUT, but if you fly it outdoor and sunlight, a ND filter is MUST. ND8 Fliter to get a better footage and eliminate the Jello effect. ND Filter-Light reduce but no color cast.
Why You Need ND Filters for Shooting Video (ND Filters Explained)? We find a video on YT to explain this issue. Start at 6:25. Here is the explaination:
Filter for a lot of drone footage, and one of the things that is great about them again, is actually the Mavic (DJI aerial drone), doesn't have a controllable aperture. So your motion is always messed with...
Package
- 1 * Beta85X 4K Whoop Quadcopter(4S)
- 1 * ND8 Filter for Tarsier 4K camera
- 1 * OSD Menu Board
There are no batteries included for all version. High recommend the 450mAh 4S battery.
Shipping Method & Delivery Times
We offer the following shipping options:
Expedited Shipping: Estimated delivery in 3-7 working days via DHL/FedEx.
Standard Shipping: Estimated delivery in 12-30 working days via registered mail.
Please expect a processing time of 1-2 business days (Mon–Fri, excluding holidays).
IMPORTANT:
- Delivery estimates are not guaranteed and may vary due to shipping address, customs clearance and carrier delays.
- Battery orders: Expect more business days for safety inspections.
- Out-of-stock items: Ships in 1–2 weeks (we’ll notify you via email).
- Address errors: Double-check your shipping details during checkout. Incorrect/missing addresses cause delays or failed deliveries.
Shipping Costs
1. Standard Shipping
We offer free standard shipping on all orders of $99.99 or more. For orders between $20 – $99.98, a flat rate of $5 applies. For orders under $20, a flat rate of $10 applies.
IMPORTANT: Starting April 24, all U.S. orders will include a flat $10 fee to offset recent increases in shipping costs and tariffs. To learn more details, check U.S. Tariff Policy Change: What You Need to Know.
2. Expedited Shipping
We offer expedited shipping service worldwide including islands area. Shipping fees are calculated automatically at checkout based on your location and order weight.
IMPORTANT: Customers are fully responsible for customs duties, taxes, customs clearance and other costs incurred when choosing expedited shipping. If a shippemnt is returned due to unpaid import fees, return shipping costs will be charged to the customer, and no refunds will be issued for the original order.
3. Additional Shipping Fee
There are certain situations where you may be required to pay extra shipping fees.
- Products with large dimensions or weight: Products with large dimensions or weight are excluded from free shipping rule due to carrier dimensional weight calculations. (Including: FPV Goggles, BETAFPV Gates & Flags, RTF FPV Whoop Kits, LiteRadio Series radio transmitter, Storage Cases)
- Remote countries/regions: Orders shipped to remote countries or regions (e.g., islands, rural areas) may require adjusted shipping fees based on carrier surcharges.
- Expedited Shipping with Batteries: Expedited Shipping orders containing more than 2 batteries that exceed the limits outlined in our Battery Shipping rule below will incur extra fees to cover separate battery shipments.
- Reshipping Costs: Packages returned due to incorrect addresses or customs clearance failures (e.g., unpaid duties) will be subject to reshipping fees. Customers must cover these costs before redelivery.
Shipping Rules
1. Battery Shipping
Some countries or remote regions are forbidden to ship stand-alone batteries due to restricted customs and safety regulations. If your location restricts battery shipments, we will notify you promptly and adjust your order accordingly. Review the 2. Countries/Regions Where Battery or Drone Shipping Is Restricted below for details.
Expedited Shipping Battery Shipping: Stand-alone batteries are prohibited for expedited shipping. However, drones packed with less than or equal to two batteries or devices with bulit-in batteries (e.g., transmitters, goggles) may still qualify for expedited delivery.
Battery Type |
International Expedited Shipping |
No batteries |
Accepted |
Contained in |
Accepted |
Packed with (no more than 2 batteries) |
Accepted |
Stand-alone |
Prohibited |
Battery Type Definitions
- Stand-alone: Package ONLY contains batteries or cells; NO equipment.
- Packed with: Package contains equipment + cells or batteries that are NOT installed in the equipment. For example, BNF drones with batteries or RTF drone kits.
- Contained in: Package has lithium batteries contained in equipment (properly installed in the equipment they are intended to operate). For example, radio transmitter or goggles.
2. Countries/Regions Where Battery or Drone Shipping Is Restricted
Due to customs regulations and carrier restrictions, we cannot ship drones or batteries to the following destinations:
- Drones Restricted: Brazil, Saudi Arabia
- Drones & Batteries Restricted: Armed Forces Europe (APO/FPO/DPO), P.O. Box, Dominican Republic, Maldives
- Batteries Restricted: South Africa, Cyprus, Cote d'Ivoire, Brunei, India, Argentina, Turkey, Serbia, Iceland, Guadeloupe, Georgia, Belarus, Bosnia and Herzegovina, Montenegro, Saint Barthelemy, Oman, Armenia, Qatar, Costa Rica, Kuwait, Jamaica, Malta, Jersey, New Caledonia, Kyrgyzstan, Burundi, French Guiana, Mauritius, Greenland
Note: The list is subject to change without prior notice due to evolving customs regulations, carrier restrictions, and local legislation.
3. Address Requirements
To ensure successful delivery, please carefully follow these requirements based on your location. Incorrect or incomplete information may cause delays or failed deliveries.
Japan & Germany: Street name and number, apartment/unit number (if applicable) are required. Omissions are not allowed.
Australia & United States: Provide the postal code that matches the city, and ensure that the city name is written correctly without any omissions or abbreviations.
Hong Kong, Macao, Taiwan, and Mainland China: Address must be written in Chinese characters.
Tax ID Required for Customs Clearance for orders to the following countries:
- South Korea: Personal Clearance Code
- Brazil: Cadastro de Pessoas Físicas (CPF)
- Chile: Tax Identification Number (RUT)
- India: Aadhaar Card/Pan Card/KYC number
- Mexico: TAX ID (RFC) / Personal ID (CURP)
- Indonesia: Nomor Pokok Wajib Pajak (NPWP)
Delayed Or Rejected Orders Liability
BETAFPV is not liable for delayed or rejected packages resulting from circumstances beyond our reasonable control. This includes, but is not limited to:
Delays of shipments to remote regions: Shipping time might be delayed for 3-7 days to remote regions or over 7 days to island destinations like Hawaii, Puerto Rico, Canary Islands, etc.
Customer-caused delay or delivery failure: These actions include, but are not limited to address changes after shipment, incorrect/incomplete addresses, invalid contact information, and refusal to accept delivery, etc.
Force majeure: It means unforeseen, inevitable, or insurmountable objective situation and other objective conditions that cause delayed shipping, including, but not limited to: national or regional air or ground transportation system controls or interruptions (e.g., weather reasons), communication system interference or malfunction, government actions, postal administration policy changes, wars, earthquakes, typhoons, floods, fires, heavy rain, heavy fog, and other similar events.
Packages cannot be delivered to your address during weekends, national holidays, and festivals.
The address is a school, hotel, unit, or residential community where the courier has no access. Please provide a permanent street address.
*Please confirm your address before payment. If corrections are needed, please contact BETAFPV customer support in a timely manner.
Tracking Your Package
Once your order ships, you’ll receive a notification email with the tracking number. You can also check your order status by logging into your BETAFPV account dashboard, where shipped orders display tracking links based on your selected shipping method. If your order status shows “Shipped” but no tracking details are visible, this means your package is prepared and awaiting carrier pickup. A status of “Processing” indicates we’ve received your order and are preparing it for shipment.
Please note that you may receive more than one Shipment Notification E-mail if item(s) from your order are shipping separately.
You can also enter the tracking number to check your package shipment status below. If you encounter issues tracking your order, contact BETAFPV customer support for assistance.
FAQ
1. How long until my order ships?
All orders typically will be processed within 1-2 working days after your payment. Delays may occur during high order volumes or backorder situations.
If there will be a significant delay in the shipment of your order, we will contact you via email. Please make sure your email address is active and remember to check the email for updates.
2. After I place an order, how do I change my order before shipment?
Country selections cannot be modified after checkout. If you need to change these details, please cancel the order and purchase again. Please contact BETAFPV customer support within 24 hours after placing the order if you need to change order product information or address.
3. How do I cancel after I have placed the order, but it has not shipped?
You can contact BETAFPV customer support for canceling if your order has not been shipped. If your order has been shipped less than 24 hours, please contact the customer service and we will try to hold your order from the shipping company.
It is impossible to cancel if your order has been shipped over 24 hours.
4. Under what circumstances will BETAFPV cancel an order unilaterally?
We reserve the right to cancel orders for:
- Unavailable product(s): BETAFPV tries to contact customers and does not get a reply in 7 days.
- High-risk Order(s) identified by banks/Paypal: To ensure your card safety, we will cancel your order.
- Unshippable destinations: If we are not able to ship to your location, your order will be canceled.
*BETAFPV reserves the right to update this policy. Last revised May 2025.