Why did my skmei 1255 watch stopped working when i pressed button 1 for 3 seconds?it just shows a purple light and goes blinky all along.

To set time and date: 1) With time and date showing, press SET and hold for 2 seconds. 2) Seconds flash. Press START/STOP to round time to nearest minute, setting seconds to zero. 3) Press MODE.

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To set the Daylight Savings Time on your SKMEI 1163 watch, first press and hold the "MODE" button for approximately three seconds until the "SET" mode appears. Then, press the "MODE" button again until you reach the "DST" mode. Use the "ALARM ON/OFF" button to toggle between "ON" and "OFF" for Daylight Savings Time. Once you have set your desired option, press the "MODE" button again to confirm and exit the setting mode. Your watch should now display the correct time, accounting for Daylight Savings Time.

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try here it might help Skmei 1180 setting instructions Google Search

Hopefully, this will help...

Lego Watches Manual Instruction:
There are 4 buttons on this lego watch case, Light button, Mode button, Stop button and Reset button, now I will show how to set the time easily!
1, Light Button: Press this button, the watch LCD light will display for 3-5 seconds;
2, How to use the stopwatches chronograph function?
Answer: When the lego watches in normal working condition, Press "Stop button" for 1 time, then the watch goes into the chronograph mode, then you can use "Stop button" and "Reset button" to operate this function.
3, How to set the alarm time?
Answer: When the lego watches in normal working condition, Press "Stop button" for 2 times, then the watch goes into the alarm mode, then you can use "Stop button" and "Reset button" to set the alarm time, also you can turn off or turn on the alarm function and chime on every hour function by the same operate.
4, How to set the right watch time, hour, minute, second, week, date, month, year?
Answer: When the lego watches in normal working condition, Press "Stop button" for 3 times, then the watch goes into the time setting mode, then you can use "Stop button" and "Reset button" to set the second, minute, hour, week, date, month and year.

This is all. So now please have a try to set your lego watches time!

WATCH KEYS: Top RIGHT=S1 Bottom RIGHT=S2 Bottom LEFT=S3 Top LEFT=S4
SKMEI WATCH User Manual Model 0817
Operating instructions:
In normal mode modelDisplay: Week-Minutes-SecondsPress S1 show Month and DatePress S2 button to show Alarm Hours and MinutesModes Covert: Press S3Modes of watch:
In normal display mode: Press S3> chronograph mode (stop watch)>time setting mode>>>(then back to beginning)
Chronograph function:
In normal display mode: Tap S3>enter chronograph mode>
tap S1 to start>
tap S2 to lap time>tap S2 read time>tap S1 to stop>tap S3 to exit tap S1 to stop
tap S2 to reset>tap S1 to start ...then begin againChime of every hour ON/OFF:
In normal mode hold S2 and then tap S3, if all icon of week on means Chime ON, otherwise means off.Alarm Setting:
In normal time Mode, tap S3 twice enter into Alarm setting mode, and the Hours flashing Tap S1 to adjust correct hour of your alarm. Pay attention to AM/PM (Military 24 hour display)Tap S2 the Minutes will flash. Tap S1 to adjust correct minute of your alarmTap S3 to save/exitTime & Date Setting:
In normal time Mode, tap S3 three times to enter Time & Date setting mode and Seconds flashing.Tap S2 and the Minutes will flash. Tap S1 to adjust minutes ("H" is 24 hour format)Tap S2 and the Hours will flash. Tap S1 to adjust the correct hoursTap S2 and the Date will flash. Tap S1 to adjust the correct monthTap S2 and the Weekdays will flash. Tap S1 to adjust the correct days (M=Monday, T=Tuesday...)Tap S3 to save/exit.Back-light setting:
Hold S4 will show all kinds of colors (blue, green, red, cyan, purple, yellow, orange) Just stop hold the button, last color lit will be memorized to set as current back light.

the mode button controls the different functions of the watch.  time, alarm time, stopwatch, timeset, alarmset, in a repeating cycle.  Make sure you are on the time function (seconds ticking and changing every second, but not flashing twice per second.  This is the normal mode that shows the time.
 A press of the lap/reset button (labeled) will show the alarm time, Unpress will show the time of day. Press again toshow the alarm time. Press and hold the lap/reset button will show the alarm time again, but it will hold there.  While holding this lap/reset button, press the start/stop button (labeled). This will turn on (or off) the alarm (tiny indicator).  Press this start/stop button repeatedly (while still holding the lap/reset button and you will see the indicator turning on and off with each press.  Stop this button pressing with the indicator OFF, let up on the lap/reset button, and the time will return to the screen.  The alarm will now be OFF. 

My watch has 4 buttons (2 on the left, 2 on the right) plus the "Indiglo" button. Use the "Mode" button (lower left) to move between the time and the stopwatch. When seeing the stopwatch, hold the "Mode" button. This will get you to the alarm setting mode. Press the "Mode" button again to switch to the time setting mode. Use the "Start/Stop" button (upper right) to move from seconds > minutes > hour > date > day of week. Use the "Spl/Reset" button (lower right) to change the numbers.

-AP