Electricity:5-6V USB charge Product capacity: 550ML Compatible with all kinds of K cup Suitable in both indoor /outdoor activities 1. Easy to use: recyclable coffee making system mini coffee drip mug, It is your best choice for brewing coffee at home, at office, at your car, on your journey anywhere when you need a sup of self-made fragrant coffee. 2. USB DC 5V motor drive pump circulating water for thorough brewing 1 minute auto stop, but if you need thicker coffee, you need run it longer for more thorough brewing. 3.Compatible with almost all kinds of coffee filters, such as K cup, K carafe for Keurig and more. 4, Easy to use and convenient to clean.