BeeasyMens Digital Sports Watch Waterproof with Stopwatch Countdown Timer Alarm Mode Dual Time Watch for Men

The stopwatch on my Beeasy watch is very frustrating as it keeps changing function back to the time function at 5 minute intervals. I Referee and If I'm being asked how long is gone,or how long it is to go,I constantly have to keep pressing buttons until I get to the stopwatch function again. Can anyone help?