I purchased this coffee grinder by #PARACITY for my daughter to travel with. I like that it can be charged via USB and worked wordlessly. This makes it ideal for travel especially for camping and hiking! Perfect for being able to have a perfect fresh cup of coffee from freshly ground coffee beans. At $19.99 it's a very good price and small price to pay for always assuring that you have a fresh cup or pot ok f coffee no matter where you're at.