"Specifications: Packing Size: 210*148*71 mm (unit) Weight of packaging: 420g Wavelength: 440-480nm Light intensity: 5W1200mw/c Input voltage: 100-240V 50-60HZ Battery capacity: DC3.7v 2200mAh Solidification effect:5s/3mm 1.LED screen, high quality plastic handle. Noiseless and no vibration at work 3. Large capacity lithium battery 4.Three modes: Slow mode/Flashing mode/All light mode 5.Automatic power off: It will automatically power off without pressing the button for 3 minutes. 6. Solidification time is:40s. An acoustic signal sounds every ten seconds to remind the operator. The length of working time can be freely controlled. 7. it has self-protection against overheating after continuous long time work, which p o w e r. of itself. After the temperature is normal, the operator can use it again. 8. The LED is longevity. Cold light source, no fan. Avoid infection, cause of air movement. Scope of delivery: 1* Dental polymerisation lamp'