Need pace clock alternative

I just joined a new pool that does not have any sort of pace clock. I want some advice on a small portable alternative that I could use, like a digital watch that can repeat 60 sec, or even an affordable small pace clock. I’ve done some research on watches but don’t know which ones are any good for pacing purposes. I've come across the classic runners stop watch, but find them very expensive. If anyone has had success with a timing device, please advise.