Features: -Exclusive design patents, headphone ergonomic design, comfortable to wear easy to fall. -Ear ear design, reducing the world's best bass. -Unique magnetic control, Not easy to fall. -Built-in high sensitivity microphone, clearer voice quality. -Built-in lithium battery, support for 2 hours fast charging, provide up to five hours of music / talk endurance. -Bluetooth one with two to meet the needs of multi-source. -With a play button, you can control the music player and make and receive calls and other functions. Specifications: -Color: Gun/Black -Bluetooth version: CSR4.1 -Job scope: > 10 meters (disabled) -Standby time: > 180 hours -Life time: > 2~3 hours -Charging time: 2 hours -Support agreement: A2DP, AVRCP, HSP, HFP -Frequency response: 20 hz - 20 KHZ Package list: 1 x Bluetooth Earphone 1 x USB Charging Cable 1 x User Manual