Features :Brightness levels: 3Bluetooth : 4.1Support TF/SD card : YesAUX input function : YesSpecification_:Lamp Power : 1.6wSpeaker output power : 3wLighting color : Warm-white with 5 more ColorBattery type : Built in 3.7V/800mAh rechargeable Li-ion batteryInput : DC 5V/500mAhFrequency response : 50GHz -20KHzProduct Weight :11.18ozCharging time : About 4 hoursWeight : 360 GmPackaging list :1 x Sensor lamp with wireless speaker1 x Manual1 x AUX cable1 x USB cableWarm tips_: Please get fully charged before first usage. Larger capacity and longer working time, built-in 800mAh battery provides about 10 hours working time (affected by brightness and volume) after 4 hours full charge.