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. Aluminum covered earpieces allow you to laser engrave for a high perceived value. Charging time: approximately 2 hours. Playback time: approximately 7 hours. Auxiliary cable included for optional, non-Bluetooth plug-in capability. Built-in lithium battery can be charged with the included micro USB cable. 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: 7.5L 6H 3.5W. Bluetooth: QDID 94738 and DID D043026