Bluetooth version: V4.1+EDR
Support profiles: HFP,HSP,AVRCP, A2DP
Frequency range: 2.4-2.483GHz
Through-put power: class2（10meters）
Modulation mode: GFSK
speaker unit: φ11mm 3mW *2
Microphone: 4015 -42dB±2dB
Battery type: 100mAH rechargeable lithium-ion polymer battery
Charging voltage：USB 5V
Charging time：Less than 2 hours
Call / music time：about 7 hours
Standby time：about 10 days
1)phone calls, hang up the telephone replay
2)music play / pause support up and down
4) voice prompt
5)At the same time,It could connection between 2 mobile phones.
6)IOS power display
【Bluetooth 4.1 Wireless Technology】Easy and fast pairing with smartphones, tablets and other Bluetooth enabled music devices. Ensure more stable signal transmission and low energy consumption. Allow two Bluetooth smartphones to connect simultaneously.
【Premium Sound Quality】The advanced CSR chip with A2DP AVRCP technology transmits high quality sound. High level DSP noise canceling technolog guarantee you can enjoy the music for running.
【Extended Battery Life】Up to 7 hours of continuous talking or music playing time keep you connected socially and musically. Powerful lithium battery ensures up to 240 hours long stand-by time.
【Comfortable & Secure Fit Ear Hook】The uniquely designed ear hooks fit in your ears snug and the ear tips block out a good amount of excess noise. Stay in place and not fall out while working out.
【IPX4 Sweatproof Sport Earphones】Bluetooth Earbuds have IPX4 WATER RESISTANT protection against body sweat and wet weather conditions. Keep your headphones comfortable, SWEAT-PROOF and RAIN-PROOF to match your active lifestyle like outdoor sports.