Transmission distance: about 10m3. Playing time: about 3-5H4. Charging time: about 3H5. Signal-to-noise ratio: greater than or equal to 85dB6. Working voltage: 3.7V7. Frequency response: 20Hz-20KHz8. Battery capacity: 4000mAh9. Speaker: 57mmx2x1010. Distortion: less than 1%11. Function: Bluetooth / card / U disk / data transmission12. Size: 86x86x204mm13. Weight: 780g
Features:1. Bluetooth: Stream music wirelessly from your smartphone, tablet, or any other Bluetooth-enabled device without interference.2. Waterproof: The speaker has a built-in waterproof TPU membrane, which is designed to prevent water from entering your device.3. Loud sound: The sound of this bluetooth speaker is very loud and can be heard through various speakers.4. Easy to carry: The portable speaker is easy to carry and store. Lanyard design, you can put it on your backpack, handbag or bike. Wireless Bluetooth .