Logitech - Ultimate Ears MegaBoom Sound System, Kaleidoscope Type: Bluetooth Portable Speaker App-Enabled: Yes Charge Time: 2.5 Hours Battery: Rechargeable Lithium-Ion Battery Specifications: WATERPROOF UE MEGABOOM can be immersed in liquid up to 1m for up to 30 minutes. POWER Rechargeable Lithium-Ion Battery for up to 20 hours of battery life between Micro USB charges. Actual battery life will vary with use, settings and environmental conditions. Serviceable battery (it can be replaced) Charge time: 2.5 hours AUDIO Maximum Sound Level: 90dBA. Frequency Range: 65Hz - 20kHz. Drivers: Two 2 drivers and two 2 x 4 Passive Radiators. Rechargeable Lithium-Ion Battery for up to 20 hours of battery life between Micro USB charges. WIRELESS CAPABILITIES Pair up to 8 Bluetooth enabled source devices - Connect up to two source devices at the same time. Wirelessly play (stream) to 2 UE MEGABOOMs ...