The OutIn Nano is a portable electric espresso maker that heats water and brews with ground coffee or compatible capsules. This Space Grey model weighs 670 grams and reaches up to 20 bars of pressure, giving you a compact way to make espresso while traveling, camping, commuting, or working away from your usual machine.You can start with room-temperature water and let the Nano heat it, or use hot water when you want faster brewing and much longer battery life. That flexibility is what makes it useful beyond the kitchen.Why choose the OutIn Nano? Self-heating: Heats room-temperature water in about 200 seconds under test conditions. Up to 20 bars of pressure: Brews at temperatures up to 92°C/198°F for concentrated espresso with crema. Ground coffee or capsules: Use fresh grounds when you want more control or compatible capsules when convenience matters. Rechargeable 2,500mAh 3S battery: Produces up to five brews from 50 ml of room-temperature water at 25°C/77°F, or more than 200 brews when starting with hot water. Flexible charging: Recharge from a 12V/24V vehicle charger or a USB charger rated above 10W. Easy to carry: Weighs 670 g for travel, camping, hotel stays, or the office. Who is this portable espresso maker for?Choose it if you want espresso away from a countertop machine without carrying a full manual setup. It is a practical option for road trips, outdoor use, workdays, and hotel rooms where the provided coffee is usually the weakest part of the morning.Brewing notes For ground coffee, start with a fine espresso grind and adjust based on your beans and extraction. Starting with hot water uses much less battery power than heating room-temperature water. Heating and battery performance vary with water temperature, environmental conditions, and use. Air-travel noteFollow current airline rules for battery-powered devices. Carry the espresso maker in your carry-on luggage and do not use it during the flight.Performance figures are based on OutIn laboratory testing and may vary with conditions and use.