A very nice LED Digital clock that you may install just about anywhere. Nice "nixie tube" look color display. Does time as well as stop watch. Great for Auto, RV, Trailer, Ham Radio, etc. Has a socket for a CR1220 backup battery (not included)
· Digital: 4 Digit
· Power Supply may be from DC 4.5-30V
· Backup Battery CR1220 Battery (not included)
· OPERATING TEMPERATURE -10 +65
· 24 HR Display
· This product is very convenient and easy to use
· Displays four 0.4 LED digital
· Time setting with single button
· It is widely used in equipment, auto, boat, planes go kit etc.
· It's small size and easy installation.
· Installation dimensions 48x 29x 21mm
· Installation opening 45.5 x 26.5mm
Some Instructions:
Wiring is Red: 6-30VDC power supply source and Black: Common ground. To change the hour for example you use short presses on the button until the time is displayed then use a long press to get the hours flashing then short presses to change the hours. Once you have the correct hours selected hold down the button you can now edit the minutes again using short presses again once you have the correct minute on display a long press will save that info. You have to use this long and short pressings to set the year, month, date, hours and minutes.
Excellent 
