Features: Drones speaker megaphone, small and light, can be fixed on drones, remote control vehicle, etc., and can be controlled at will, without flight pressure. High compatibility, applicable to most UAVs in the market, such as for Mavic Phantom FIMI X8SE etc. With adjustable self-adhesive strap, easy to adjust, sticked and fixed, and can avoid scratching the fuselages. It adopts 400-480MHz infinitely frequency bands, with strong penetration, built-in voice decoding chip, hifi-amplification, speaker volume of about 100dB, and high definition sound quality. Clip microphone can be added to the collar, which does not affect the control of UAVs and is convenient for operation. Made of quality ABS material, lightweight and full of durability. Specifications: Main Material: ABS Color: Black Length: Approx. 7.3cm/2.87inch Batteries Parameters: 3.7V 250mA(Megaphone); 3.7V 150mA(Remote Control) Charging-time: about 30 minutes(Megaphone); 30 minutes(Remote Control) Applicable Modles: for Mavic Mini Air 2 2S/Mini 3 Pro/for Phantom3 4 Pro/for Fimi X8SE etc Note: Please allow 0-1cm error due to manual measurement. Please allow for slight color difference due to different display resolution. Package includes: 1x Megaphone 1x Clip-on Micrphone 1x Self-adhesive Strap 1x USB Cable 1x User Manual