OrigAudio Bumpster Bluetooth and NFC Wireless Speaker - Black Compatible with any device that has Bluetooth or NFC connectivity. Also included is a 3.5mm audio cord for devices that don't have the option of Bluetooth/NFC. Or for use when travelling. Full range bass enhanced sound with Bluetooth and NFC functionality. Bluetooth range up to 33 feet. Built in microphone to make phone calls. "Call-choice" feature allowing you to easily toggle between the Bumpster and using your phone to make calls. Micro USB charging slot (cord included). Battery life: 10 hours. Speaker power: 3 watts. Frequency response: 100Hz to 20,000Hz. Size: 3.14 x 3.14 x 2.48 inches with a weight of 0.4 lbs. Available in a soft touch black silicone color.