Parameters:
<br />Bluetooth version: bluetooth 4.1
<br />Radio frequency: 2.4-2.48GHz
<br />Transmission range: 10 m
<br />Charging Power: 3.7V
<br />Charging time: 1 hour
<br />Talk time: 4 hours
<br />Standby time: 120 hours
<br />Size: 28mm * 16mm
<br />Weight: about 8.5g
<br />
<br />Package:
<br />1 x headphone
<br />1 x manual
<br />1 x charging cable