Functions: 1. Display: month, day, hour, minute and second 2. 30 second alarm 3. Hourly time indicator 4. 12/24 hour clock format 5. +/-1 second accuracy per day6. Simple 2 button functions 7. 1.5V battery power supply Inner packing: 1pc/bubble bag + white box Unit size: 7.5 x 5.6 x 2.1cmOuter packing: 200pcs/ctn Carton dimensions: 33.5 x 30 x 37cm N.W.: 12.9kg G.W.: 14.4kg producing area:China