Earbud is dual wear-can be sorn alone or with over-the-head band!
          Max4x technology blocks 4 times the external noise keeping your conversations crystal clear!
          310° swivel ear base for left/right wearing.
Features:
1). Either the  ear hook or the ear pulg.
2). Support bluetooth headset,handfree profile
3) .Redial the last call ,Reject call.
4). Volume adjustable.
5). LED indicates connection.
6). Faster connecting, clear sound, anti-interference
7). Over-the-head Design
8). Noise canceling crystal clear sound

Specification:
1) Bluetooth protocol: version 2.1
2) Frequency: 2.4 GHz
3) Bluetooth range: 10meters.
4) Net weight: 10g
5) Power supply:DC5.1V/120Ma
6) Working volt: 3.7V
7) Battery:  rechargeable Li-Ion  battery
alking time:up to  8 hours
9) Standby time: up to 250 hours
10) Chargeing time: about 3 hours.
Accessory:
1).Charger(optional).
2).USB Charging line.
3).User guide.