Specification:  Item Name: 75mm Wheelbase 2S Brushless Whoop FPV Racing Drone;  Wheelbase: 75mm;  Version: Basic Version / Standard Version ( Optional);  - The diffirence of them are the package charger;     Basic Version: USB Charger;     Standard Version: 6-way Charger;  Size: 98mm*98mm*36mm;  Weight: 25.9g (without battery);  Flying weight: 40g (with Original 250mah lipo battery x2 );  Max Take Off Weight: about 44g.     Crazybee F3 Pro Flight Controller -  Item Name: Crazybee F3 Pro FC;  MCU: STM32F303CCT6 (72MHZ, 256K FLASH);  Sensor: MPU6000 or ICM20689 or BMI270 (SPI connection);  Board size: 28.5 * 28.5MM;  Power supply: 1-2S battery input (DC 3.5-8.7V);  Built-in 5A(each) Blheli_S 4in1 ESC Dshot600 ready;  Built-in Receiver ( Diffirent version having diffirent receiver);  Built-in Betaflight OSD(SPI Control);  Built-in Current meter Max 28A;  Current meter scale set to 1175;  Built-in 5V 1A BEC with LC filter;  Built-in voltage detection;  BLHELI_S pass-through Ready;  Heading LED Ready;  Firmware:  (Frsky version) CRAZYBEEF3 PRO FR Firmware target: CrazybeeF3FR;  (Flysky version) CRAZYBEEF3 PRO FS Firmware target: CrazybeeF3FS;  (DSM2/DSMX version) CRAZYBEEF3 PRO Firmware target: CrazybeeF3DX;  (Frsky EU-LBT version) CRAZYBEEF3 PRO FS Firmware target: CrazybeeF3FS.     Onboard 5A 4 In 1 ESC -  Power supply: 1-2S LiPo/LiPo HV (3.5v/8.7v);  MCU upgraded to EFM8BB21;  Current: 5A continuous peak 6A (3 seconds);  Support BLHeliSuite programmable;  Factory firmware: S_H_50_REV16_7;  Default protocol: DSHOT600.