" The Whammo 2.0 Bluetooth® Speaker packs quality sound into a compact size. The battery lasts up to four hours at max volume, and it can be fully charged in three hours. The built-in microphone and music controls lets you make or receive calls while controlling the audio. The Bluetooth® working range is 10 meters (33 feet). Includes Type-C charging cable. Three-watt speaker output. Giftbox and manual are made from FSC®-certified material.