Remarkably small but 7500mAh powerful lithium battery, Nano enhance your daily coffee needs. This gold-ratio designed portable espresso brewer upgrades its pumping system, so you simply add either hot or cold water with your favorite capsules or fresh ground coffee to the Nano. Never be limited any water temperature, by day and night or by any location, It just one-tap click to brew exquisite espresso for your coffee time. | Outin | | Nano Portable Electric Espresso Machine, Detachable Universal Coffee Stand | White | Best Buy