In-ear Sweatproof Earphone with Microphone Earpiece Sports Wireless Bluetooth Earphone Headset Bass Stereo Running (black,black Gold,rose Gold)

Parameter specification Bluetooth chip and Bluetooth version: CSR 4.1 Bluetooth protocol: A2DP AVRCP HFP HSP Battery: 3.7V 60mAh Charging power: 5V/80mAh Sensitivity: 103dB + / - 3dB Impedance: 32Mw Transmission distance: barrier free 10m Frequency: 2.4GHZ Call time: about 4 hours Listen to the song time: about 5 hours Standby time: about 160 hours Product weight: 18g Functional description Play music, music and music switch, Volume regulation, Chinese and English voice switching, Call voice number function Last number redial Operate the voice prompt function, The IOS system displays electricity, Support WeChat, vehicle navigation, QQ voice and other software system state Turn off the machine for 3 seconds. Enter Matching: Long Press Startup Key 5 seconds into Matching State Volume add and subtract: short press volume add key is to adjust volume add, short press volume subtract key is to adjust volume subtract Double-click the boot button in paired mode Playback: short press key The last song: the volume - the key is 2 seconds The next: volume + key in 2 seconds Answer the phone: press the boot button short Refusing phone: the long press button Last replay: double-click on the boot button; then press the boot button to cancel dialing out