Twins Earphone With Charge Dock Mini True Wireless Bluetooth 4.2 Sport Earbuds Sports In-ear Headset Noise Cancelling Stereo

Battery capacity: 850MA
Talk time: 50H
Frequency: 2.402G-2.480G
Headphone battery capacity: 45MA
Packing size: 145*67*43mm
Package weight: 178g
Transmission distance: 10 meters
Standby time: 100 days
Charging input: 5V/1MAH Output: 5V
Voltage: 3.4V--4.2V
Single product size: 22mm*27mm*105