【USB Rechargeable and Unique Desigh】Rechargeable Electric Salt and Pepper Grinder Built-in 1200mAh rechargeable battery, can use mobile power, power adapters, laptops and all devices with USB ports to charge . You avoid frequent battery replacement and save the cost of purchasing a large number of batteries. When fully charged, it can be used continuously for 2 hours 【Gravity Operation & LED Lighting】The electric pepper mill works by gravity induction. Just press the power button, then flip the salt and pepper grinders, you will have fresh spices, finally, press the switch to turn off the grinder (to prevent accidental grinding from consuming all energy). What’s more, with LED light helps to control the amount when seasoning dishes 【Adjustable Grinding Roughness】 The top of the electric pepper mill has a white knob to regulate the thickness of various spices, pepper and salt. (Clockwise for fine adjustment, counterclockwise for coarse adjustment). Note: Do not rotate more than one