Stream music from your smartphone, tablet, or any Bluetooth enabled device with the Auden Bamboo Bluetooth® Speaker Integrated buttons allow you to adjust the volume, skip music tracks, or take a call mid-playlist with the built in microphone LED indicator for battery level and Bluetooth pairing Supports audio playback from a 3.5MM auxiliary cable Charging time: approximately 2.5 hours. Playback time: approximately 4 hours Built-in lithium battery can be charged with the included micro USB cable Bluetooth operating distance of up to 33 feet Max output power: 5 watts Gift box dimensions: 3.54L 4.02H 3.27W Bamboo and wood products are prone to color variances and will vary between lots Due to the nature of bamboo and wood material, variations in laser imprinting quality and consistency may occur Bamboo is a natural, renewable material