 Specification Bluetooth version: V3.0
 Operating Frequency Band: 2.4GHz ~ 2.48GHz
 Output power: Class 2
 Effective Distance: 10 meters
 Support Compatibility Specification: HSP, HFP, A2DP
 multiple devices Pairing: pairing device support and 4
 multipoint connection: connect two phones simultaneously support
 displays battery level: Support (IOS devices)
 passkey: 0000
 Battery Specifications: 90mAh/3.7V
 Talk time: about 5 hours
 When playing music length: about 5 hours
 long standby time: about 135 hours
 Charge time: about 1 hour
 Operating temperature: -20 ℃ ~ +70 ℃
 Weight: 15g
 Other features: Dual-mic dual-microphone design, effectively eliminate ambient noise, the use of stainless steel hard shell, GORETM acoustic vent professional acoustic material, every setting on the circuit except for the wind, strong and powerful influence to block strong wind with Always-on call On Multipoint, weight evenly distributed, so that particularly comfortable to wear.