Naztech 12254 N52 Koncert Bluetooth Speaker - Retail Packaging - Black Package Contents: Bluetooth Speaker, Micro USB Charging Cable, 3.5mm Auxiliary Cable, Carrying Pouch, User Manual Up to 18 hours Music Playback, Integrated Playback controls, Hands-Free built-in mic Frequency Range: 2.4GHz -2.48GHz, Effective Distance: 10 meters, Bluetooth: 2.1 + EDR Battery: 2500mAh Li-polymer, Charging Time: Approx 3hrs Input: DC 5V/500mA~1A, Output: 2 x 2.5W RMS