Truly Wireless Earbuds Design: Adopted with TWS technology for walking, jogging, hiking, biking, gym and watching TV or sleep. The right and left headphone sync with each other through wireless and provide stereo output sound Ergonomic Design: Optimized for extra comfort and fit better in ear, with different size ear tips, suit for most peoples ears. Touch control to ease the burden of pressing, soft material to protect ears, make your phone call and music time more comfortable ? No pains when you put the earbuds in your ear for 2 - 3 hours Twins Mode / Single Mode: The headset contains two pieces, they can be used separately by using both earpieces or one of them. Simply one press to pair / play / pause / answer or reject phone calls, up to 10m Bluetooth range in the open space. Compatible with iPhone, LG, Samsung Galaxy, iPad, Bluetooth-enabled devices, etc. V4.2 upgrade technology provides 2 times faster on signal transmit than 4.1 or 4.0. Clear high and low volume, ideal for car calling and friends chatting, or working use Intelligent Charging Box Offer Power Design: Up to 150mins continuous talk or music time on a single charged.