ZEALOT S38 Portable Subwoofer Wireless Bluetooth Speaker with Built-in Mic, Support Hands-Free Call & TF Card & AUX (Black)

1. Portable adjustable shoulder strap, easy to carry 2. 52mm dual magnetic speakers, stereo surround 3. Support TF card and U disk playback, can also be used without Bluetooth 4. Built-in sensitive microphone, smart and clear call 5. AUX audio input, easy wired connection 6. Smart touch buttons, non-slip and sensitive specification: 1. Bluetooth version: V5.0 2. Speaker: 4 ohm 10W x2 3. Transmission distance: about 10m 4. Frequency response: 20Hz-20KHz 5. Signal to noise ratio: 85dB 6. Working voltage: 3.7V 7. Charging voltage: DC5V 8. Charging port: Micro USB 9. Battery capacity: 1800mAh 10. Talk time: about 2h 11. Music playback: about 2h 12. Standby time: about 30 days 13. Charging time: about 2h (different charger specifications time are different) 14. Size: 250X100X103mm