Version a

? Bluetooth version: V4.0 + EDR

? Bluetooth profiles: Hands free / Headset

? Radio frequency: 2.4GHz

? Transmission Power: Class2

   Support functions: to replace the battery (equipment with two batteries) to cable， "YES" or "NO" Voice answer and reject a call， switch the next song， play / pause， last number redial， dual-device connectivity， a Tropsch two can simultaneously connect two phones; easily convert

? Transmission range 10 m

? Charger Power AC input 110-240V DC output 5V

? 10 hours talk time

? Battery capacity 170mHA 500 hours standby time

? Dimensions 33 * 26 * 8mm

? Packing size: 152 * 91.5 * 37mm

? weight of about 0.82g，

? Complete Weight With Packaging: 0.12kg