Searching for a swim watch for resistance swimming

SFDonovan

I'm searching for a swim watch I can use for my backyard pool. It's not a lap pool, but I have a belt attached to a bungee chord that is hooked to the wall. All I want to get is stroke count, pace, length of swim in time and any other data points I can capture. Not interested in a HRM while swimming since they are highly inaccurate. Just need something to wear that could capture as much data as possible and sync via bluetooth or ANT.