Specifications: Color:red/yellow/blue Working voltage:5V (USB power supply) Working current:30-50mA (depending on the display color) It is DIY kit. User need to weld it. ECL-132 remote control clock can display clock by 132pcs 5mm LEDs. Display character's size is 81*43mm Product size:23.3x9.5cm/9.17x3.74inch 1>.Button Function. Middle button: Main Menu. Top button: Increase Bottom button: Reduce Right button: Right Options Left button: Left Options 1). Adjust the time submenu: Flashing LED is the current selected bits.Right 2bits can adjust hours and left 2bits can adjust minutes by other four buttons. Press Middle button save and quit this options,and enter to alarm settings submenu. 2). Alarm settings submenu: It is the master switch for 5 channels alarm at first. The first bit display "C" and the last 2 bits flash and display "on" or "OF". Top button and Bottom button can switch on /OF. If select "OF", Then press Middle button enter to error correction submenu. If select "on",Press Middle button to set the first channel alarm. The first 2bits display "C1" and the last 2 bits flash and display "on" or "OF". Top button and Bottom button can switch on /OF.If select "OF", Then press Middle button to set the second channel alarm. If select "on", Press Middle button to set hour and minutes. Flashing LED is the current selected bits.Right 2bits can adjust hours and left 2bits can adjust minutes by other four buttons.Right button and left button can selecte hour and minutes.Top button and buttom button can set alarm time.Then Press Middle button to set the second channel alarm. Then set other alarms by the same steps.After set the fitth alarm, press Middle button enter to error correction submenu. 3). Error Correction submenu: The first bit display "n" and the last 2 bits flash and display "on" or "OF". Top button and Bottom button can switch on /OF. If select "OF", Then press Middle button to normal display. If select "on", Press Middle button to set correction parameter.The last 2bits flash and represent days.Then press Middle to set second. Then press Middle button to normal display. 2>.Button features shortcuts 1). On normal display status,press top button can close or open display. 2). On normal display status,press buttom buttom can switch hour/minute or minute/second display.(Four LEDs in the middle will not flash or be lit on minute/second status). 3). On normal display status,press left button can set 5-channel alarm. 4). On normal display status,press right button to correcting second,LED will display "ESC",after seconds,display minute/second and second bits flash. And after seconds,4 bits flash.Make sure a accurate time then press middle button to set second and to normal display. Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Includes: 1 x diy clock kit 1 x clock case 1 x Remote control