Stream from any Bluetooth device. Integrated buttons allow you to answer calls through the speaker, adjust volume, skip music tracks or take a call mid-playlist with built in microphone. LED indicator for battery and Bluetooth. Charging time: approximately 1 hour. Playback time: approximately 6 hours. Support for micro TF card. Built-in lithium battery can be charged with the included micro USB cable (300mAh). Bluetooth operating distance of 30 feet. Gift box dimensions: 3.5L 3H 2.7W.