Specification:  Name: Electronic Calendar (assembled). Operating voltage: DC9-12V.  Operating current: ≤90mA.  Dynamic current: ≤160mA.  Display color: Red/Green/Blue (optional).  Panel language: English.  Finished product size: 228 x 160 x 38mm.  Net weight: about 375g.  Timing error: ≤±0.5 seconds/day.  Temperature error: ≤±1°C.  1. 1 inch large digital display time.  2. 0.5 inch digital display calendar and temperature.  3. Red, green and blue display colors are optional.  4. Real-time display in seconds, adding dynamic.  5. One-key switch power saving function.  6. 50 year long calendar display.  7. Real-time temperature display.  8. The whole point time belling function, simulate the church bell.  9. 8 way alarm clock, 12 way birthday reminder.  10. 12/24 hour system, Celsius/Fahrenheit can be switched at any time.  11. There are brackets and hanging holes on the back, can be placed on the desktop or on the wall.  12. Power-off memory, automatic background working when the power is off, no need to set the power again.  13. Can simulate the sound of running water and cuckoo calls.     Package includes:  1 x Electronic Calendar Clock