Easy To Cont 1) Enter Pairing mode: Long (Keep) press switch button(about 3 seconds) till (pass by light flash with voice power on) till the blue light and red light flashing alternatively and hearing voice paring. 2) Find the Bluetooth device on your phone and cli it, after success, you will hear the voice conted$ Non ear plug headphone The ear-hook earphones are ergonomically designed, Almost negligible headphone weight: It will allow you to wear it comfortably for a long time,ideal for the ear, the ear-mounted non-bone conduction earphones do not need to vibrate the ear bones, more comfortable$ Bluetooth 5.0 & Strong battery life Compared with 4.2, Bluetooth 5.0 can iease the transmission speed of Bluetooth 5.0 from 1Mbps to 2Mbps, iease the transmission distance to 4 times. Built-in high-performance lithium battery, enjoy 4 hours of music / talk time and 160 hours of standby time, fast charging takes less than 2 hours$ Single ear wear Either left or right ear can be wearing, if you wear glasses, wireless earphones is suitable for small or thin frames. Compatible with Android, WP , iOS 5.0 and above system, as long as the device has Bluetooth, you can use it.Within 10m/393 in, you can enjoy music and the signal contion is stable.$ External speaker unit Loudspeaker close to the ear but it is not inside the ear, will not plug blo the ear canal. Listening to the surrounding environment during a call or music, Safer on the road or in some scenes and more portable for business, work.