Features: Resonance Vbration Bluetooth Speaker. Super bass sound with NFC function. With build-in RMS 26w speaker ,it's powerful. The speaker make sound through the resonance medium ,make the media surface into a super speaker effect, issued 360 degrees without pointing subwoofer, you can make the sound field space in different locations of the audience can hear the HIFI sound effects, different media surface can be issued different The sound quality effect. Wood(like desktop wood box): Bass is good, rich and sumptuous mid-sound Carton : The sound will be louder than flat, the different size carton with different sound . Glass: Clean and transparend sound*Hollow Wall: Good spacious sound performance Aluminum alloy and Acrylic top cover design. With build-in microphone , support handsfree function. Through the resonance medium , bass improve 50%, high pitch improve 35%. Bluetooth CSR4.0 and EDR ,fast and stable connect . Build-in 1400mah ,3.7v battery , 6-7h working time. With touch panel control : Next /Last song ,stop/plsy , answer/reject call. .Support Bluetooth / Wire 3.5mm aux connect . Support line out : Can connect 2/3 more speakers playing music at the same time.