The Touring M design philosophy of Swiss precision machinery is a simple portable speaker with high quality sound quality without compromising to detail. SPEC Type: Bluetooth 4.1 A2DP Wireless Technology / Driver: 1 X 3/4 Dome Twitter, 1 X 3.5 Woofer / Input Terminal: FM Receive, AUX Input / Power Supply: 100 - 240V AC 50/60 HZ / Frequency: 60Hz ~ 20KHz Crossover / 5Hz Size: W10.2 x H5.9 x D3.1 inches (260 x 150 x 80 mm) / Weight: Approximately 2.1 Kg (main unit only) / Accessories: Power cord / 1 year warranty ATTENTION inside the main battery (can be played for about 30 hours when fully charged).