Bluetooth chip: CSR
<br />Bluetooth version: V4.1
<br />Continuous call: about 5 hours
<br />Available colors: black, red
<br />Transmission range: 15 meters
<br />Standby time: 250 hours
<br />Special features: memory pairing / echo cancellation / APTX lossless conduction technology
<br />Charging time: about 2 hours
<br />Accessories list: headphones, charging lines, ear caps, brochures