【Gravity Activated Operation】The grinder is equipped with a gravity sensor and a built-in rocker switch. If the angle of inclination is greater than 100 degrees, grinding is automatic. And the product will automatically shut down after standby for 30 minutes. 【USB Rechargeable Design】The electric pepper grinder is built-in rechargeable lithium battery (1200mAh) and uses Type-C cable for fast charging. Fully charged in just 1.5 hours. Adjustable Grinding: The electric pepper mill can support different grind settings Simply turn the knob on the top of each salt and pepper mill to set the desired size. On the top of the grinder there is a protective cover to prevent dust from falling inside. High quality and large capacity: the electric salt or pepper grinder is made of ABS and glass premium quality, non-corrosive and antioxidant and makes spices fresh and healthy. Its large capacity (170ml) is easy to refill and clean, you don’t need to refill it frequently, saving your time and energy.