Simple operation just press a button you can trade with one hand Just tap the button with one hand to grind automatically Builtin 1200Ah battery the USB charging method can be freely selected at home office car and mobile power to charge Powerful function our stainless steel grinder is large enough which can be ground several times at once and ground and used immediately the taste is better Comfortable bottle body our grinder adopts arch design which is comfortable to hold and can be easily grinded The precision grinding machine is made of high quality stainless steel material which is healthy durable safe and environmentally friendly