Syllable D50 Mini In-ear Bluetooth Earphone With Microphone Noise Cancelling Wireless Headset For iPhone 6 6 Plus Samsung Cellphone<br>  Features:   This is a smart Bluetooth earphone that supports super clear phone talking and stereo music. It has built-in lithium battery， stereo codec; audio bandwidth is 3Mbps， support 1Mbps data packet transmission. It's with A2DP\/AVRCP high quality stereo audio transmission and remote control protocol. You will find it very easy to operate.  Specification:                 Model         Syllable D50               Driver         8 mm environment friendly black magnetic design， phone talking is much clearer               Impedance         16 OHM               Bluetooth Version         Bluetooth V3.0+HS               Power level         CLASS II               Output power         20mW               Bluetooth distance         &amp;le;10M               Audio frequency response         80HZ-20 KHz               Bluetooth frequency range         2.402-2.480GHz               Working voltage range         3.0V-3.7V               Sensitivity         -86 dB  0.1%               Microphone Sensitivity         -45&amp;plusmn;3dB               Battery Indicator         Red light is on during charging， blue light is on after complete charging      <br>Package Included: <br>1 x Syllable D50 In-ear Bluetooth Earphone1 x Earhook1 x USB Cable1 x Manual<br>           <br>Detail Pictures: