IFlight ProTek R25 HD Polar Nano Vista ELRS 2.4G BWhoop AIO F4 XING 1404 4600KV 4S 2.5inch FPV Cinewhoop Ducted Drone          ProTek R25 BNF Specs:         Motor: XING 1404 4600KV (LINK)         Weight: 147.5g (without battery)         Bottom plate thickness: 2.5mm         Top plate thickness: 1.5mm         Body Size: 143mm*158mm         Flight Controller pattern: 25.5*25.5mm         FPV cam spacing: 14mm         BWhoop F4 AIO 1.1(LINK)         Propeller size: 2.5 inch         Arm Thickness: 2.5mm         Wheelbase: 113mm                  Specifications:         AIO//Whoop AIO F4 V1.1 AIO         Mounting pattern: 25.5*25.5mm/φ3mm         Firmware Target: IFLIGHT_F411_PRO         Constant current: 20A,25A (Burst)         Config:IFLIGHT_F411_PRO.config         Connector: Micro-USB         ESC Firmware: Q-H-15         Current sensor: yes         BEC output: 5V 2A         ESC Telemetry: NO         Size: 30.5*30.5mm         MCU: STM32F411         BLHeli: BLHeli-S         Barometer: NO         Blackbox: 8MB         Gyro: BMI270         INA pad: nR2         Weight: 7.4g         Input: 2-4S                  ProTek R25 HD Quad BNF Included Components and Parts         pre-built and tested Quadcopter         1 x ProTek R25 Frame         1 x Caddx Polar Vista Digital HD System Kit         1 x Albatross ipex LHCP 5.8g 75mm antenna         2 x Nazgul 2525 propeller (Set of 4 - Color May Vary)         1 x iFlight Lipo Strap 15*180mm (Color May Vary)                  Important         The For DJI Remote Controller is recommended for beginners since you won't need to set up another receiver, but it is also optional in this BNF drone because it is NOT required in order to use the FPV system. If you don't choose to use the For DJI Remote Controller, you can choose a receiver option for your transmitter and then bind to your own radio as usual.         Our current frsky receivers default version in 2.XX, requires to use the same version of frsky transmitter.         If you have none frsky transmitter,please downgrade the version lower than 2.X.