Wireless Version: V5.0

Transmission Distance: 10M

Frequency Response: 20-20KHz

Impedance: 16

Rated Power: 3mWx1

Drive Unites: 10mm

Battery Capacity: 90mAh

Input: DC 5V=60mA

Play Time: 9H

Standby Time: 90H

Charging Time: 1.5H

Net Weight: 8g

Noise Isolating Talking

Portable Lightweight

HD Calls

High Quality Sound

Small and Light Weight

Can Switch the Caller at any time silicon microphone