QuietSmart™ Hybrid Active Noise Cancellation up to 38dB Customized Noise Cancellation Algorithm for Clarity Call 10mm Composite Dynamic Drivers Deliver Powerful Sound 32-hour Playtime: 9 Hours + 23 Hours with Charging Case Fast charging, 10 Min Charging = 2 hours Playtime IPX5 Sweat & Water Resistant In-ear Detection Technology Single Earbud Mode-Right or Left Transparent Mode Allows Ambient Sound Activate Voice Assistant