Features:\nMade of high quality material, safe and durable to use.\nYou can set the working time as you like, maximum up to 40s.\nWith automatic alarm and shutdown function while low battery.\nWill automatically shutdown with any operation within 1 minute.\nSuper long standby time, up to 90 days. \n \nSpecifications:\nMaterial: Plastic \nSize: 250*150*60mm\nInput Voltage: AC 100V-240V \nFrequency: 50-60HZ \nOutput Voltage: 3.7V \nBattery Capacitance: 1400mAh Lithium-ion Battery\nCharging Time: 3hours \nBattery Voltage: 4.2V \nCuring Time and Depth: 5s/3mm\nBlue Light Wavelength: 420-480mm\nStandby Time: 90 days \n\nPackage including:\n1* LED Curing Light \n1* Charging Adapter \n\nNotes:\n1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.\n2. Due to personal measurement technique is different, there may be 1-3cm error of the physical.Thank you!