Features: - With Bluetooth 5.0 wireless technology, high-speed data transmission, strong anti-interference, it can be used indoors or outdoors. - Features with volume control function, convenient to operate. - HIFI sound quality experience fashion and graceful appearance makes it become an ornament of your desk. - Accord with acoustic and aesthetics design principle and it sounds distinct. - Built-in 1200mAh capacity lithium battery, can meet the needs of all-weather outdoor music player Can play for 10-15 hours. - Built-in microphone for hands-free calls, free your hands and keep your safety in driving. Specifications: Interface type:USB; Battery capacity:1200mah; Frequency response range:100HZ-20KHZ; Output power:3W; Signal to noise ratio:≥75dB; Power supply mode:built-in lithium battery; Channel:2.1; Duration:10-15 hours; Bluetooth protocol:5.0; Number of speakers:1; Effective distance:10 meters; Function:anti-fall, voice prompt, radio, dustproof, call function; Operation method:key; Playback format:MP3, WMA, FLC, WAV; Shell material:PlasticPlaying,Volume Control; Connection:Wireless; Interface:TF Card Slot; Audio Source:Bluetooth Enabled Devices; Color:Black,Gray,Red; Package Included: 1x Bluetooth Speaker; 1x USB charging cable; 1x Lanyard