The Wakit Grinder is incredibly easy to use, especially for medical users with hand or motor skill disabilities. with a literal tap of the large, easy to press top, the motor turns on, and in seconds your herb is broken up with the patented ball chain technology. It is recommended that you not load more than .5 grams of herb at a time, and can use the circular tray for storage as well. A USB charging cable is included, The Wakit only needs to charge for 45 minutes, and the LED light will change from red to green when fully charged. The ball chain mechanism is easy to replace as well, but does not wear easily, so expect this electric grinder to get the job done for years to come.