Features: 1. Stylish Behind-Ear Streamline Outlook Design Guarantee 100% Stable and Comfortable User Wearing Experience for Running, Jogging, Biking, Fishing, Camping, Hiking and other Outdoor Sports. 2. The Most Advanced bluetooth 4.1 Chips Hardware Configuration Ensure Hi-Fi CD Quality Stereo Super Bass Music Sound and Strong Signal. Leading Tech Can Provide No-lag Voice when Listening to Music or Calling with Mic. 3. Simple To Use: Portable Function Control Buttons Are Designed for Easily Operation. Just Press it untill Blue and Red LED Light Alternatively Flashing, find and connect with your phones,then you can enjoy music or calling wirelessly. 4. Universal Compatible for i - Phone 6 6 Plus 5 5S 4 4S / for i - Pad for i - Pod / for Samsung Galaxy S6 S5 S4 S3 LG Motorola Sony and i - OS/Android Mobile Phones. Almost all smartphones can work with this well. - Specifications:General Specification Model BT-KDK09 Wearing Type In-ear Cable Length 0.6m - Technical Parameters Microphone Yes Wired Control Support bluetooth Version V4.1 Transmission Distance 10m Rated Power m - W Receive Sensitivity 113d - B Impedance 16Ω Frequency Response 20-20000Hz Battery Capacity 80m - Ah, 3.7V Charging Time (h) 2 hours Talking Time 5 hours Working Time (h) 3.5 hours Standby Time (h) 180 hours - Package Included: 1* BT-KDK09 bluetooth Earphone 1* Charging Cable 2* pairs of earmuffs 1* Manual