Stream music from your smartphone, tablet, or any Bluetooth enabled device or take a call mid-playlist. Integrated buttons allow you to answer calls through the headset, adjust volume and skip music tracks. Active Noise Cancellation eliminates unwanted noise without sacrificing sound quality . Charging time: approximately 2 hours. Playback time: approximately 16 hours ANC & Audio Playback, 20 hours Audio Playback only. Auxiliary 3.5mm cable included for optional, non-Bluetooth plug-in capability. Built-in lithium battery can be charged with the included micro USB cable (600mAh). Bluetooth operating distance of up to 30 feet. EVA molded storage case included for added protection when not in use. EVA molded storage case dimensions: 9L 9H 2.37W