1). Either the  ear hook or the ear pulg.

2). Support bluetooth headset,handfree profile

3). LED indicates connection.

4). Faster connecting, clear sound, anti-interference

5). On-line chat through Bluetooth wireless transmitter

6). Multipoint Profile: Connect with two Bluetooth devices at the same time

7). Noise Elimination
8). Voice Separation Technology
9). Wind noise reduction
10). Simple easy pairing & power consumption saving

Specification:

1) Bluetooth protocol: version 2.1, CSR BC6 chip 
2) Frequency: 2.4 GHz
3) Bluetooth range: 10meters.
4) Net weight: 8.5g
5) Power supply:DC4.2V/40Ma

6) Working volt: 3.7V
7)Battery:  rechargeable Li-Ion battery

   Talking time:up to  3.5 hours

   Standby time: up to 60 hours

   Charging time: about 2 hours.

8).Size: 30*27*8mm

9) Color: Black,Silvery

Accessories:

1).Charger(optional)

2).USB charging line.

3).User guide.

4).Ear hook