Bluetooth Headsets, Sikadeer 900s Music Sports Headphones, Wireless Hands-free Bluetooth Headsets with Mic Neckband Noise Cancelling Headsets/earphones/earbuds, for Cell Phones (900s-Green) 1. Amazing Design: This amazing design provides a simple, unique approach to cord management. This bluetooth headphone sllows you to leave your phone and leave your hands free but not miss any call. 2. Battery Life: Standby Time up to 23 days, Music Time up to 14 Hours and Talking Time 17 Hours. With every about 3.5 Hours Charging, You can just enjoy your wireless sport/music time without any worry. 3. Bluetooth 4.0 and Fast Connection: Pairing is just easy and quick with a simple switch button. Compatible with: Iphone Series, Ipad Series, Samsung Series, Android and any Bluetooth enabled device 4. Vibration and Voice Prompt: When there's coming call, this Bluetooth Headset will remind you with vibration. It will never miss any Phone call when you are playing sports or even in a noisy place. 5. Retractable Earbuds: It provides extra flexibility, portability, and durability. Its convenient to carry in your bag for daily use and for travel.