OrigAudio Evrybox Bluetooth Speaker and Phone Charger - Black & Metalic A Bluetooth speaker and Phone Charger in one. Bluetooth range up to 33 feet. 60 hours of play time. Built in microphone to make phone calls. 4400mAh built in battery pack that will charge your phone up to 2.5 times. Frequency response: 100Hz to 20,000Hz. Speaker power: 3 watts. Compatible with any device that has Bluetooth. Also included is a 3.5mm audio cord for devices that don't have the option of Bluetooth. Or for use when travelling.