Ovleng MX777 Wireless Bluetooth V4.1 EDR Stereo Headphones & Mic

Condition : Brand New in Retail Box

Specification:

Distance: 10M

Battery Volume: 300mA

Charging Voltage: DC5V

Loudspeaker size: 40mm

Speaker impedance: 32

Working Time: Music 4 to 6 hours, Call 8 to 10 hours

Version: V4.0+EDR

Microphone: Built in

Power Rating: 40mw

Working Voltage: DC3.7V

Wireless Standby Time: 120h

Charge Time: 2 to 3 hours

Sensitivity: 20 to 20khz