Mini DJ Bass Bluetooth Speaker B28 Protable Music Wireless Speaker Bluetooth Subwoofers With USB and TF

1. Support hands free calls

2. Surround stereo voice.

3. Echo and noise cancelling

4. Support TF (SD) card and USB flash disk

5. Support FM Radio

Bluetooth Version: V3.0 with EDR

Working Distance: At least 10 Meters

Battery: Built-in rechargeable Lithium battery 1800mAh

Music Time: 4 hours around

Charging Time(hrs): 2 Hours

Sensitivity: 70DB

Speaker Impedance: 4Ω, 5W*2

Charger Voltage: DC 5V

Operation Frequency: 100Hz ~15KHz

Supported Profiles: HSP，HFP，A2DP，AVRCP