Features: 3-in-1 Digital Alarm Clock: it has functions of clock, alarm clock, and stopwatch. Time Display: 12/24 hour time display format switchable. Clear LCD Display: large digital font is easy to read. Alarm Function: wake you up by beeping sound. Timer & Stopwatch Function: convenient for cooking, backing, studying. Magnetic Back: the mini clock can be attached on any smooth metal surface. Power Supply: powered by 1 * LR1130 1.5V button battery. Specifications: Color: Black / White (Optional) Material: ABS Power Supply: 1 * 1.5V LR1130 battery Item Size: 102 * 70 * 10mm / 4.02 * 2.76 * 0.39in Item Weight: 52g / 1.83oz Package Weight: 86g / 3.03oz Package Size: 11.5 * 8.3 * 2.3cm / 4.53 * 3.27 * 0.91in Package List: 1 * Clock 1 * Manual (EN, DE, FR, IT, ES)