V4.1 in-ear sport stereo bluetooth earphone earpiece

Bluetooth version: v4.1
Charging Time:1-2H
standby Time: 150H
Bluetooth Profiles: A2DP, AVRCP, HSP, HFP
Sensitivity: 98dB
Talking/Music-playing Time: 4-5H (The final time dependent on the actual work condition)
Operating Distance: 10M
Frequency Range: 20-20KHZ
Speaker Impedance :16 OHM
Drive unit :Ø9mm
Charging Interface: USB
Chip: CSR
Weight:13.4g
Battery capacity: 80 mAH
Package: blister box