Ask HN: Any Minimalist Fitness/Sleep Tracker with Long Battery Life?

I must admit, I'm feeling overwhelmed by the abundance of available fitness and sleep trackers.

I'm seeking a fitness tracker that:

Boasts a long battery life, ideally lasting multiple weeks without needing a charge. Lacks a display or has a very minimalist display, as I prefer to avoid visual distractions and want the device to be as unobtrusive as possible. Is small and lightweight for comfortable all-day wear without causing any inconvenience. I'm particularly interested in a tracker that offers the

following features:

Tracks my steps and monitors movement activities. Monitors my sleep and analyzes sleep patterns. Is waterproof, allowing me to wear it while swimming. Offers the ability to sync my data with an app to track my progress and gain detailed insights into my activities. It's important to note that I'm specifically looking for a tracker that does not operate on a subscription model.

I'd appreciate any recommendations you have, especially if you have personal experiences with specific fitness trackers that meet that requirements. Even if there are products that don't fulfill all the criteria but are still worth considering, I'd welcome your suggestions.

Thanks in advance for your help!