Description 1. Advanced Bluetooth audio decoding chip is adopted to support the connection of all Bluetooth devices; 2. Portable detachable shoulder strap up to carry to anywhere. 3. Mesh cover for protect speaker from water, dust, shock. 4. 10W*2 big power with two b diaphragms on each side, and right chann 360 stereo. 5. Call function, noise cancing microphone makes you answer calls without reaching your phone. 6. The tone is soft, clear and dynamic, with distinct layers; 7. Support TF Card or misro SD Card up to 32G, support AUX, support USB 2.0 Disk. 8. TWS function, you can conncect two speakers with one phone sync. 9. Multiple flashing mode LED lights, lights can flash with the music mody; One click conversion 10. 2400 mAh battery for up to 10 hours of playtime at 2/3 volume on a full charge.Specification 1. Bluetooth version: 5. 02. Wiress transmission range: 10M 3. Battery capacity: 2400mAh 4. Charging Time: 2-3 hours 5. Normal volume: About 5h 6. Horn specification: 52mm x 27. Horn power: 4 / 5Wx 28. Frequency response: 70Hz-20KHz 9. Signal to noise ratio: 90dB 10. Distortion rate: