Wearing Type: In Ear 
Chip Solution: JL/WT 
Bluetooth: Version 4.1 
Support EDR+HFP+HSP+A2DP+AVRCP
CVC 6.0 echo and Noise Cancellation
Voice Prompt: English/Chinese 
Speaker: 10mm
Impedance: 98±3dB
Sensitivity: 16±5%Ω
Working Distance:up to 15m
Headset Battery Capacity: 55mAh 
Standby time: 100 hours
Talk time: about 4 hours
Music time: about 3.5 hours
Earphone Color: black, silver, grey