This is the clock what you need--Simple, multi-function and easy to install. This small guy can let you know real time , time and voltage. Our product even can run without power plug, that mean you don’t need consider about the power problem. To install it you just need to stick it at what place you like, really easy to use.(Caution: The back light function only work when the power cable connected). Feature - ColorAssorted Color - Material: Plastic+LCD. - Size: 15.5 x 2.2 x 5.5cm. Tem-perature measurement range: -50 - 70 degrees. digital Accuracy:± 1.0 degree centigrade, Accuracy: +1.0 degree centigrade. can display degree centigrade / fahrenheit scale.Date/time, week/ , 12/ hour conversion. - battery voltage real-time , digital display voltage. - LED backlight function, power supply with backlight, LCD content all display, if standby battery power supply, no backlight, LCD only display time. - Button function:TIME: toggle display TIME/date, and hold 2 seconds to set TIME. : displays the alarm time. and hold for 2 seconds to set the alarm. UP : added when setting; Time interface under switching seconds/week display; The alarm is turned on/off in the alarm interface. : sleep in (don’t do it if you don’t have to).DOWN / degree centigrade / fahrenheit scale button: when set reduction; degree centigrade / fahrenheit scale; On the time screen, this button Open frost warning for 2 seconds. - Display the state of voltage, when the voltage is too high or too low, there will have alarm sound and light tips. - Blue backlit color. Installation method: there is a folding bracket in the back of product, and there is double-sided adhesive in the bracket, you can stick a convenient watching place. Other Function: The calendar function Set the time and hold the TIME button for 2 seconds to enter the setting state of TIME, and set the 12/ hour system, second, hour, minute, year, month, day, and the week will be adjusted automatically, and exit the setting interface automatically after 1 minute without pressing the button. Time/date display Instead of setting the status, TIME to the display TIME/date. Week/ UP to display seconds/week instead of setting state. The alarm function Set the alarm In the alarm interface, the button for 2 seconds and enter the setting state: hour - minute - determination. The alarm is on/off In the alarm interface, UP to turn on/off the alarm. In alarm mode, no button for 8 seconds, return to clock mode. The alarm will go off for 30 seconds and the alarm sign will flash when off. Snooze function When the alarm goes off, any (except the ) to terminate the function that the alarm does not perform. When the alarm goes off, the button to enter the . The snooze 5 minutes and 3 times. When to sleep, the sign flashes. Package list: 1 x Clock 1 x Cable 2 x Power Cable 1 x Package Box