Travel-friendly single-serve machines typically brew small espresso-style cups (about 5–8 oz) and larger coffee sizes (about 8–12 oz). Many models also offer single- or double-espresso shot options alongside those cup sizes.
Manual travel presses require no power and usually list hand-wash care. Small single-serve electric brewers require power and commonly specify care such as spot- or wipe-cleaning and warnings like "Do Not Place in Dishwasher."