How to turn off hourly chime on digital wat...

From a Timex manual (hope it helps):

HOURLY CHIME: When viewing the NORMAL TIME display,
press START/STOP to set the hourly chime. The colon remains
constantly displayed when the chime is “OFF”, or flashes when the
chime is set to “ON”.

To turn off the hourly chime on my 4 button watch, I have to hold the "alarm display" button to view the alarm time.Then press the "mode" button and watch the arrows flashing on the days turn on or off. Arrows = hourly charm. No arrows = no hourly beeping.

With my Atlantis 200 I got lucky and discovered that if you use the MODE button to get to the alarm screen, then you push the START/STOP button you can see the hourly chime icon (the bell) and the alarm icon come on and off. If you keep pushing the START/STOP it will go through all your choices; alarm on-chime on/alarm off-chime on/alarm on-chime off/alarm off-chime off. Simply choose the setting you want then hit mode. When you watch goes back to the regular time setting it will be in the mode you chose.

If your no-name/no instructions watch has the chime function, try this to turn it off/on:
In regular time mode, hold down the reset button, while you hit the mode button. You should see something on the face appear or disappear. This could be the chime on/off signal. You will have to wait for the regular time to hit the hour to see if this works.
If you do the same but hit the start/stop button instead, the alarm should turn on/off.
The mystery is that you have to go to this third level of button combinations. Who knew these generic watches were this deep.

On mine if you press and hold the "reset" button all of the "Day" boxes are either on or off indicating on whether the hourly chime is on or off. By then pressing the "start" button whilst holding the "reset" button this turns "on" or "off" the "day" boxes and therefore the hourly chime. Hope this helps.
Frank

Have U checked Timex for instruction book? A hammer can fix it.