【Sound Isolation Technology】 Bluetooth headphones built in the chip and supports the sound Isolation technology, maximum keep the noise out and providing the immerse sound in ears. You can enjoy your music world under the powerful bass, mellow mid-range, and clear treble. | 【Up to 16 Hours Playtime】 Wireless headphones' playtime lasts for up to 16 hours under fully charged. And only charging the 1.5 hours, you can seamlessly enjoy up to 16H playtime & 250H Standby time. | 【Stereo Surrounding Sound】 Feature with the 11mm dynamic driver, the wireless earbuds supports the spatial sound for immersive music, sports, and commutes - delivering a surround sound experience that you can take with you anywhere. Built-in mic with voice notification of incoming calls. | 【IPX7 Waterproof Headphones】 Adopting highly sealed shell + nano-coating waterproof technology, this headphones waterproof performance reaches IPX7 waterproof standard, and it is not afraid of sweat attack even if it is used in severe sports. Great for running, hiking, cycling, fitness, yoga, travel, gym etc. | 【Easy Control & Dual Connection】 Designed for the easier physics button control, allows skip/ play/ pause on your music tracks as well as all phone use without reaching your phone. Due to adopting the latest Bluetooth 5.3 technology, the bluetooth earbuds supports two devices can be connected simultaneously.Up to 30ft Bluetooth range in the open space and 10ft in the obstacles space. (Note: Bluetooth headphones cannot connect to smartwatches.)