The Nooka Zoo can be read similarly to a traditional digital watch, but with a Nooka twist. The large window displays the hour, while to read the minutes you need to view the horizontal bar on top and the seconds is displayed on the smaller window. The Zoo also features a chronograph and alarm feature. Size: 38 x 38 x 10mm/Band Width: 38mm Water Resistance: 3ATM Functions: Alarm, Chronograph, Date, Time Battery: CR2016 Battery (3.0VDC Operating Voltage) Module: 32,768Hertz Quartz Crystal Oscillation Frequency Display: TDF LCD Display Electroluminescent(EL) Case Material: Co-molded With PU Body Case Back: Stainless Steel/Screw In Warranty: 1 YearNooka Watches