Free movement of 3 axis, positioning the light to where you want. Removeable handles, easy to clean and easy to mount and dismount. Optimized color of light, color temperature range is 5500-6500K, similar just like the natural light from your window. The power of light from 450-550 is limited to minimize the effect on the sensitive material used for the restoration. Factory calibrated at 700mm(the average length of the human arm). A precise 80X160 light patterned with uniform intensity is produced. Outside the light pattern, there are 50% lower illustration level compare to the specified requirement in ISO standard-illumination occurs only where you want it to in the oral cavity, not in the patient’s eyes. With 4 led cold-light lamps.