Details Feature - [Wireless Bluetooth-compatible technology] With the help of Bluetooth-compatible 5.0 technology; you can easily connect the speaker to almost all Bluetooth-compatible audio devices and enjoy wireless music. [Multi-function] Support TF card/U disk music playback and AUX IN music playback; it also supports FM radio; free to enjoy news and music. [Duration] The rechargeable 1800mA lithium battery supports 3-5 hours of working time. Power is supplied through the Micro USB charging port. [Easy operation] Buttons and large knobs can easily control play/pause music; answer/hang up calls; volume +/-; previous/next song; and adjust radio frequency. [Classic wood grain design] Retro wood grain design; stylish and unique; complements your lifestyle. Specification - Model - JY-66 Frequency response range - 20Hz-18KHz Speaker unit - 57mm; 4Ω Output power - 5W Signal to noise ratio - ≥80db Battery capacity - 3.7V 1800mAh Playing time - 3-5 hours (depending on music volume) Charging