HomeActiveBluetooth SpeakersDETAIL & DOCUMENTSTECHNICAL SPECSBluetooth Version4.2 + EDRBatteryBuilt-in 600mAh lithium-ion batteryOutput Power3W THD = 10%Frequency Response80Hz - 18KHzCharging TimeApproximately 2-2.5 hours with DC5V - 1AProduct Dimensions78mm x 78mm x 40mmNet Weight162g (including built-in lithium-ion battery)