1. Different sounds with different surfaces: This speaker uses bone conduction technology to give you a diy sound experience. You can test and enjoy different sounds - almost like using different instruments. Putting it on different surfaces like glasses, guitars, kraft paper boxes, plastic storage boxes, photo frames, sports headphones or even dashboards can give you a variety of sound effects. 2. Excellent combination experience: Bone conduction speakers are wireless connected . Two speakers can be wireless paired automatically, which will provide true wireless stereo. We highly recommend using two connected speakers, you can enjoy a 5.0 surround sound experience. 3. Small but powerful speakers: If you find the right object for your bone conduction horn, speakers can be very powerful, reaching 115 decibels and allowing you to customize the sound quality. It is recommended to place thin objects such as halloween plastic boxes or buckets. 4. Multifunctional speakers: You can use bone conduction speakers to listen to music, podcasts, stand-alone phone conversations or conference calls, play games or movies, and even enjoy the experience of game sound. Bone conduction speakers also function as fm radios, allowing you to listen to music and follow podcasts. Function: Bone Conduction Speaker, FM Radio Wireless Ver: 5.0, A2DP, HFP Bone Conduction Transducer: 3Watt Frequency Range: 120Hz-16kHz Battery: 400mAh Polymer Battery How to Use : 1.It is automatically powered off after blue-tooth no connection in 5 minutes. 2.Short press "left key" to play previous song,long press "left key"to indicate sound decrease.short press "right key" to play next song, long press "right key"" to indicate sound increase.longpress the"middle key"to indicate power on or off,modeswitch, play/pause, answer/ hangup. 3.Bluetooth Nam