I7s Dual Twins with SMALL SIZE, SUPER LIGHTWEIGHT. Ensure a secure and comfortable fit for any ear.Wireless Mini Dual Bluetooth Earphones come with charging box. These are compatible with all bluetooth devices. Lightweight and compact - Easy to carry and keep in your pocket. It can be paired for both single and dual ear at a time. It has a built in mic with call answering function with a single touch. There is a single multi purpose button for all the functions. Simply press to pair / play / pause or answer / reject a phone call. Best for use while working, Walking, Running, Gymming, etc. Strong Compatibility : Designed with V 5.0 + EDR to Provide more stable connection and signal transmission. Pairing just take a few seconds. COMPATIBLE WITH ALL BLUETOOTH ENABLED DEVICES .Both or single use as your need. HOW TO PAIR? Single Pairing 1.For initial use, press and hold the button for 3 seconds of either earbud and release after the LED flashes between Red and Blue. (Voice Notice: Power on - Paring) 2.Open the mobile phone bluetooth and search "Headset", then connect it. 3.Pairing the earphone with your mobile phone, the product will be in standby status after pairing completed, Blue LED flashes 5 seconds each time. (Voice Notice: Connected)Twins Pairing Press and hold the function button of the other earbud (slave earbud) for 1s, release after LED flash in Red, two earphones will automatically pair with each other, and the LED flashes in Blue after connected