"Does the Slim Track need a phone to work?"
A: No, it works without a phone. Your steps, distance walked, etc. are all shown on the wrist watch.
"Is this pedometer watch waterproof?"
A: It is considered highly water resistant. You can get it wet while washing hands, or if it gets wet outside. It's not recommended to wear scuba diving, but it's highly water resistant.
"I don't need a fancy tracker. I want to count my steps and have a small wrist so I don't want a big clunky watch. The SlimTrak works for me. I hardly even know I have it on."