100% brand new and high-quality made. Compatible with all Bluetooth-enabled devices, it can connect to 2 smartphones at the same time and answer calls from either one. 180 rotatable flip-boom arm allows you to adjust the angle and fit this headset in your left or right ear perfectly. Ergonomically design for snug and secure fit, it is very comfortable to wear and will not cause any ear swelling. Supports up to 17 hours of talking time and up to 170 hours of standby time. Easy and safe to use when driving, make your life more high-efficiency. CVC 6.0 noise reduction with built in HD microphone. All-in-one multi-functional button for easy operation. Specifications: Material: ABS + Silicone Power Supply: Built-in 170mAh rechargeable battery Transmission Frequency: 2.4GHz Transmission Distance: about 10 meters Charging Time: about 2 hours Talking Time: about 17 hours Music Time: about 12 hours Standby Time: about 170 hours Support Formats: HSP/HFP/A2DP/AVRCP