HV-900 Sport Bluetooth 4.0 Wireless Sweatproof Earbuds Headset Headphone Earphone<br>Features: <br>10 hour music \/ talk time (about 10 hrs w\/ ANC turned on)Enhanced bass response， HD Voice and aptX featuresErgonomic design for quick， easy access to music and call controlsAround-the-neck wearing style with body-contoured fitBluetooth version 4.0 with A2DPVoice Actions with compatible phoneMake and receive hand-free phone callsLightweight， yet very powerful<br>               <br>Specification: <br>          Charging voltage       MICRO USB 5V           Working current       25-30mA           Bluetooth Working range       10M           Output power       2x20mW           Frequency range       2.401-2.480GHz           Distortion factor       &amp;le;1%           Frequency response       20Hz-20KHz           Working Time       Music state 10 H \/ Talkingstate 15H           SNR       S \/ N&amp;ge;95           Charging Time       2-3h           Bluetooth name       HV-900           Speaker       16&amp;Omega;20mW x 2           Battery       3.7V \/ 195MAH (Polymer rechargeable battery)           ANC frequency       100-1000HZ           ANC level       15-20dB           Standby time       &amp;ge;500H           Working environment       10-60   <br>Package Included: <br>1 x HV-900 Sport Bluetooth Wireless headset1 x USB charger cable1 x User's Manual1 x Ear Tips1 x Packing Box<br>Detail Pictures: