1.Neckband foldable sport style, stereo
2.Support Volume+-, Next/previous songs
3.Receive/end the phone calls. Support last number redial
4.Transmit range: 10 meters
5.Bluetooth CSR 4.0
6.Supports headset, handsfree, A2DP and AVRCP profiles
7.Lithium battery 260mAH
8.Talk time:9 hours; Play time: 6 hours
9.Standby time: 120 hours
10.Dimension: Main body 54mm (diameter) x 23mm (H)
11.Product weight:71.2g