Small calculator with calendar and clock ,convenient to be carried to anywhere
Real time with hours, minutes and seconds display
Can 180 degree rotation
Aperpetual calendar (range from year 1900 to 2099)
Time: 2 modes(12 hours/24 hours) are available
World time for 16 cities/time zone
Smart up and down keys
Key tone function
Size:7x 7 x 1.5cm(approx)
Power supply
remove the battery insulator from the battery compartment
when pulling out the battery insulation, if the LCD can not display, pls take out the battery and install it again
Replace the old battery when the clock display is faint 
