The 10 Best Drip Coffee Makers of 2026, According to Our Tests Personalized Gift For Family First Mother's Day Hand Line Art Mug 3242 Famvibe SETUP, Disposable Shot Glasses, 5 oz, Clear Plastic Cups, 200 pack Walmart.com Up to 400 milligrams (mg) of caffeine a day appears to be safe for most healthy adults. That's roughly the amount of caffeine in four cups of brewed coffee 10 cans of Ambiano thermal coffee machine Made in germany 26$ Selection switch with 3 flavor stages Capacity about 1.2 l 24 hour timer with blue LED display Automatic shutdown function Anti drip function Filter size 1