FullSpeed Lucky Box Beeper Buzzer 90dB 5V Built-in Battery for RC Drone FPV Racing

FullSpeed Lucky Box Beeper Buzzer 90dB 5V Built-in Battery for RC Drone FPV Racing Specification: Brand name: FullSpeed Item name: Lucky Box Beeper Input Voltage: 5V dB: 90dB Weight: 2.3g Size: 15.5x13.5x10.5mm Features: - A Working Buzzer after Battery Ejection Lucky Box Beeper is designed with a built-in battery that gives it the power to sound an alarm even after the quad battery was disconnected. Lucky Box Beeper charges itself simply by being plugged in. - Adapt to Any Flight Controllers Lucky Box Beeper is programed to be compatible with any model flight controllers. Just connect it to FC and fly it. Package Included: 1 x FullSpeed Lucky Box Beeper