Feature:1.bluetooth V4.0 + EDR wireless connection, up to 10m transmission range.2.Supports A2DP stereo playback.3.LED lights show different states, handy to operate.4.Coupled with hanging strip, added lightweight and mini size, easy and portable to carry.5.120mAh Li-ion battery can last 5 - 8h working time or 1 - 2h calling time (charging for 1h).Specification:BrandKELIMAModelBM - E13bluetooth Versionbluetooth V4.0 + EDRApply To Car BrandUniversalCompatible withUniversalWorking VoltageDC 5VProduct weight0.0150 kgPackage weight0.0610 kgProduct size (L x W x H)5.40 x 3.50 x 0.80 cm / 2.13 x 1.38 x 0.31 inchesPackage size (L x W x H)16.00 x 10.00 x 3.00 cm / 6.3 x 3.94 x 1.18 inchesPackage Included:1 X bluetooth Adapter1 X Hanging Strip1 X 3.5mm Audio Cable1 X Micro USB Cable1 X English / Chinese Manual