Electric grinder (silver), gravity sensing: electric grinder (black)[high quality materials] stainless steel and acrylic materials. The top quality ceramic rotor provides long-term durability and can grind the hardest pepper, sea salt or other spices. Note: the grinder was originally designed to tighten the gap to the minimum. Please adjust the gap according to the powder size after receiving the goods.[automatic operation] just turn it upside down to get fresh ground salt or pepper. It allows you to activate your favorite spices with one hand, while the other hand can handle other kitchen tasks freely.[adjustable coarseness] turn the grinder knob on the top of the equipment to adjust the coarseness you like. Rotate clockwise into fine particles and counterclockwise into coarse particles.[blue LED light] just twist your wrist gently and the blue light will light up. You will easily see the amount of salt and pepper put into your food.