**• Material: ABS+Fabric
**• Bluetooth version: CSR4.0
**• Transmission distance:10 meters
**• Support handsfree function
**• Frequency range:180Hz-20KHz
***• S/N ratio:≥80dB
**• Speaker unit: diameter 40mm, inner magnetic 20W=10Wx2
**• Battery: Built-in Polymer Lithium-ion battery, 4000mAh
**• Charging voltage: 5V / 1A
• Charging time:3~4 hours
• Working time:8~10 hours
• Product Size: 198x65x66mm
• Weight: 400g
• Color: Grey,Black