weight: 3.3 grams High-Speed 32khz gyro, lowest noise floor, and highest sensitivity gyro ever used Through-hole solder pads – forms an I-Beam when soldered for extra strength Integrated buzzer driver Voltage and current ADC pins, for full voltage and current monitoring Full telemetry output support Most active software development 3.3v and 5v voltage outputs 2 serial UARTs Bluetooth expandable F4 processor 16mb of flash memory GPS expandable Dimensions: 25mm x 25mm Mounting holes: 20mm squared to center of holes Specifications Processor: F4 F405 MPU Firmware: FlightOne (BB) or FlightOne One (Beta) Gyro: SSG (Super Secret Gyro) Invensense 20602 Mounting Dimensions: 20x20mm Physical Dimensions: 26.75x26.45x5.75mm (without gummies)