Richer Bass & High Definition Sound Drawing on extensive research and development, Fire-Boltt Bluetooth headphones features HD stereo sound with high definition and unparalleled rock-solid richer bass. Bring Music Where You Sweat The Fire-Boltt wireless headphones have reliable water & sweat-proof Nano-coating for use and improved durability in intense workouts or exercises in light rain. 2 Hour Quick Charge For 7-9 Hours Playing Improved lithium polymer battery brings up to 9 hours pleasure musically and socially with a quick charge of only 2 hours. Lightweight and Comfortable Fire -Boltt running headphones are designed for sports with intense movements. Perfect for running, jogging, hiking, yoga, exercises, gym, fitness, travelling and etc. Easy Control Buttons Control buttons on the headphones so that you can play and pause music, adjust the volume, skip tracks, answer and end calls, and activate the voice control of your phone. LISTEN & EARN WITH THE BOLTT PLAY APP - Connect your device, stream your favorite music, watch movies, play games and get exciting rewards for this! Visit boltt.com to get Premium Membership of the Boltt Play App with every product purchase.