Which came first—the hen or the egg? Either way, the egg. It really works! [Instructions]: Turn the timer clockwise once to zero, then turn it counterclockwise back to the desired time. A clear chime will sound when the timer has reached its limit. [Function]: Ribs take half an hour to boil, crabs take ten minutes to steam, and milk is bubbling in five minutes. When you're scrambling in the kitchen, it'd be great if you could always remind you when the timer's up. These little timers can help. No more worrying about boiling water or burning dishes. A half-hour nap is enough, a 20-minute hair treatment, a half-hour math exercise for your child, 20 minutes to memorize English vocabulary, at least a half-hour morning exercise... This timer is genuine. Please compare the clarity of the markings and packaging. Tip: The longer you turn it, the louder the chime will sound! [Instructions] Turn the timer clockwise once to zero, then turn it counterclockwise back to the desired time. A clear chime will sound when the timer reaches its limit. Size: Approx. 57*76MM No batteries required Egg timer in suitable design!