Battery capacity: 300mah Channel: 2 1PC speaker Play format: MP3/WAV Interface type: USB 1PC charging cable Duration: 4 hours 1.HF|Sound quality sound playback 5W full-range speaker, high volume out of the Internet. Number of speakers: 2 Connection method: Bluetooth connection Operation mode: button Frequency response range: 100Hz-20KHz 2. Automatically recognize the dual speaker pairing mode after booting, and easily create stereo sound effects. material: ABS Bluetooth protocol: 4.2 Function: voice prompt, call function 4. Built-in microphone button for high-definition wireless calls. 3. Bluetooth 4.2 chip signal is stable and comfortable, fast connection in 2 seconds, effective distance up to 0.10 , clear and stress- listening to songs. Power supply mode: built-in lithium battery Applicable people: general Signal to noise ratio: ≥80db Effective distance: 10M 5. Outdoors are more convenient, satisfy your leisurely fun, and bring music to where you want to go. Output power: 5W Harbinger Powe Speaker Companion 50 Speaker System