Unsure, as no manual shown after searching with https://www.google.com
The following site has this model watch for sale:https://www.flipkart.com/fastrack-38045pp01-trendies-digital-watch-men/product-questions/itmf3zhnccdrbtxa?pid=WATF2Z4Z9SUKSZDZ
It does have a question and answer section on the web site, so perhaps you could ask the seller your question to be sure. Someone asked how to turn on and off the alarm below:
Questions and Answers
Q:How to turn off alarm..?
A:Press and Hold Reset & ST/STP buttons simultaneously for couple of seconds so that you'll hear a beep sound , that indicates your alarm is turned Off.(you can notice alarm ON symbol will dissappear
Q:What does wifi like symbol locate in watch .What it works?A:It says if alarm is on.
Q:how set alarm
A:Press mode button and press St button , reset button for setting Alarm has been activated