We have used the innovative approach and smart technologies to create an automatic grinder for our users. The precisely designed spring-loaded grinder made the automatic process to be identical to the hand grinding process to provide the perfect consistency. You can grind 20-30 cons and rolls per charge. The USB portable charger provides quick charging and long battery life. Due to smart design and the use of premium materials, Otto grinder spill-proof and odor-proof and will serve you for many years.