LED Curing Light, Cordless, 800 - 1000 mW/cm2, Timer: 5, 10, 15, 20 seconds, Three modes: Full, Ramping, Pulse. Blue light wave 421-480mm. Autoclavable light guide 8mm. LED.C curing light adopts the principle of ray radiation to solidify the light-sensitive resin by shooting at it in a short time. Battery can be replaced. Cordless design with a holding base that charges the batteries, not the handpiece.