General description This portable bone conduction speaker offers a unique sound experience by turning any hollow core into a speaker. It is compact and versatile, allowing you to enjoy music and sound effects in various environments. With its innovative technology, you can explore different sounds by placing the speaker on various surfaces. Technical specifications Capacity: 400mAh Function: Bone Conduction Speaker, FM Wireless version: 5.0, A2DP, HFP Wireless Stereo supported FM radio built-in Bone Conduction transducer: 3Watt Frequency range: 120Hz-16kHz High sensitive microphone built-in Battery: 400mAh Polymer Battery Charging port: yo=C charging port (not compatible with fast charge) Material: Metal Color: Black Compatibility and accessories Package Contents: 1 x Bone Conduction Speaker 1 x Charging cable Usage Listen to music, podcasts, and phone conversations Participate in conference calls Play games and enjoy game sound Use as an FM radio Other information