The internal lens offers glare-free light, while the 18-watt »perfect color« (CRI 97) LED ensures optimal color rendering. Replaceable or lens optics of the kind familiar from photography are the heart and signature design characteristic of the lui spotlight series. lui piano with the zoom optic allows you to continuously adjust the light cone between 20° and 60°. If you like to regularly enjoy changing light, lui piano can be controlled via Bluetooth and Occhio air from any corner of your office or home.