This cordless light is programmable for 5 to 30 seconds of curing time. A lithium battery powers 750 rounds of 10-second curing cycles, this automatic ramp-up helps minimize composite shrinkage. The autoclavable light rotates to 360° for greater access and reduced glare at the composite site. This system includes an LED handpiece, anti-glare shield, 8mm light guide and a universal adapter. Darby offers a one-year warranty on this product.