1. ??Best diopters?? 5 diopters are an optimal compromise for reading, sewing, knitting, crocheting, beading, soldering and more. 5 diopters mean a maximum magnification of 2.25 times according to length or 5 times according to the area of an object. 2. ??Stepless dimming?? You can easily adjust the brightness between 10% and 100% by pressing and holding the brightness button. Option with 3 color temperatures - 3000K / 4000K / 6500K - for your different lighting needs. 3. ??Space-saving, stable stand?? Mounted on a flat surface with a thickness of up to 5 cm, saves space on your desk, workbench or table. Once the arm is in position, it will stay fixed. Doesn't rattle when you adjust the angle. 4. ??Highly adjustable swivel arm?? The lamp head can be swiveled 220 ?? upwards and downwards and 350 ??, with a 35-70 cm extendable long arm. 5. ??Professional eye care?? Adopts diffusion-permeable material with lighting close to daylight; emits soft light without ghosting, glare or flicker.