1.Battery Operated- Semi-Automatic Espresso Machines with rechargeable battery (USB charger cable included), after fully charged, you can use the grinder to grinding your coffee bean 12 times, perfect for traveling and camping. And a coffee maker for home, office, cars.     2.ALL-in-One Design- Coffee Grinder, Instant Coffee Machine, Filter and Coffee Mug All in one Portable and Travel-friendly Design, not Hard to Grind Coffee Beans Like the Manual One, and it just like the Home Electric Coffee Grinder.     3.Multi-functions- USB portable coffee maker for travel Not Only can be Easy to Grind Coffee Beans, But Easy Operate for Dry Spices, Nuts, Seeds, Grains, it is also a Great Gift for Coffee Lovers for Home, Office, Cars, Camping, Travel.     4.Adjustable Coarseness- By turning the adjustable knob mechanism at the bottom of the automatic coffee grinder, can adjust coffee powder's coarseness to ensure particles finely and evenly.     5.Stainless steel body, small size, easy to carry.     Capacity: 250ML     Power: DC5W     Voltage: 3.7V     Battery capacity: 1600MAH     Charging time: 2h     size:22*7.5cm 22*7.5cm     Material:Stainless steel + PP     colour:Silver     Package Contents:     1 * coffee machine     1 * USB cable     1 * manual     Only the above package content, other products are not included.     Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.