ZEALOT S51 Portable Stereo Bluetooth Speaker with Built-in Mic, Support Hands-Free Call & TF Card & AUX(Blue)

1. Portable lanyard, easy to carry
2.52mm double magnetic loudspeaker, can be connected by TWS, 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. Concave bottom round button, anti-slip and sensitive

specification:
1. Bluetooth version: V5.0
2. Speaker: 5W x2
3. Transmission distance: about 10m
4. Frequency response: 100Hz-20KHz
5. Signal to noise ratio: 90dB
6. Working voltage: 3.7V
7. Charging voltage: DC5V
8. Charging port: Micro USB
9. Battery capacity: 1800mAh
10. Talk time: about 3h
11. Music playback: about 3.5h
12. Standby time: about 30 days
13. Charging time: about 2.5h (different charger specifications time are different)
14.USB input: 5V 1A
15. Size: 80x80x192mm