Features:
1) Bluetooth V1.2 compliant
2) Remote pick-up and hang-up with 10 meters working distance range
3) Frequency band: 2.4GHz~2.4835GHz unlicensed ISM band
4) 4dbm(class2) Bluetooth radio
5) Encryption and authentication ensure safe secure communications
6) Paired device is up to 7 and one at a time with encrypted link security
7) Listen to the music in the computer with Bluetooth USB dongle
8) Quick and inexpensive solution as a Bluetooth plug-on modules to computers
9) Enables computers to communicate with any Bluetooth peripherals wirelessly
10) Antenna: integrated inside the adapter

Specifications:
1) Class2: -1dBm~+1dBm
2) Modulation: GFSK
3) Operation range: 10m.
4) Link mode: SCO/ACL
5) Data rate: 721 kbps
6) Sensitivity: -78dBm @ 0.1% BER
7) Operation range: 10m
8) Profiles: GAP, SDP, headset and handsfree both
9) Lithium Polymer battery with overcharge protection