EEB8795B 55mAh Built-in Battery Outdoor Travel Sports Neckband Earphone Bluetooth Headset

Bluetooth:JL V5.0

Speker Dimension:10mm

Battery:55mA

Charging Time:1.5h

Playing Time:2.5h

Sensitivity:103±5db

Frequency Response:20Hz-20KHz

Working Distance:10m(Barrier-free Space)

Impedance:32 Ω 

WIth round wire