Features:  * Bluetooth V4.0 wireless connection、 enjoy music and answer\/reject a call freely. * Portable neckband of back hanging desing、 convenient for sports doing. * Dual sound channel、 bringing excellent stero sound experience. * Light and comfortable wearing、 not easy hurt your ears. Specifications:          General Specification             Brand        Suicen             Model        SX-610             Color        Gray、 Blue、 Red             Wearing Type        Neckband             Product Weight         9g           Technical Parameters             Connectivity        Bluetooth Connection             Conectivity Interface        Charging Port             Output Power        20mW             Driver Unit        27mm             MIC Sensitivity         -52dB             Impedance        32Ω             Frequency Response        20-20000Hz             Bluetooth Version        Bluetooth V4.1             Bluetooth Protocol        HSP、 HFP、 A2DP、 AVRCP             Transmission Range         Within 10m             Battery            200mAh             Charging Time        ~2 hours             Talk Time        ≥4 hours             Music Time        ≥3 hours    Package  Included:                  1 x Suicen SX-610            1 x Charging Cable            1 x Warranty Card            1 x User Manual