Dreamwave Harmony Copper/Camel/Brushed Aluminum Wireless Premium Bluetooth Speaker Power: 16W, CSR4.0 + EDR, A2DP AVECP Rechargeable li-ion battery 4500mA, up to 18 hours play time at about 2/3 of full volume, 10 hours at max volume 2 active driver, 2 passive driver, HI-FI sound, anti-Distortion circuitry HFC function (hands free call) Premium and Elegant Design