13mm dynamic speakers for a richer audio experience and ENC noise cancelling for clearer call: The larger driver delivers the Hi-Fi stereo sound with crisp, clear high notes and deep, rich bass. So with the ear buds wireless, you can enjoy more vivid sound than ever. Also, The built-in microphones in each eabud for calls with ENC noise reduction will reduce the environmental noise by up to 35dB, allowing gamers to communicate more freely. It’s your great choice for relaxing and business. Small size, big possibilities: 3g single earbud, pocket design charging case with LED power display, and 40H playtime: The wireless ear buds feature a portable design and an improved LED display that shows the remaining battery of each head phones and charging case in real-time. And on a full charge of 1H, your earbuds wireless Bluetooth will last up to 8H, plus the fully charged case can provide about 4 recharges for it. Enjoy vibrant sound anytime, anywhere. Perfect for indoor or outdoor.