Orbitkey’s Universal Tracker is designed the way other trackers should be. It charges (no need for watch batteries, no matter how long they last), it’s water resistant, and most importantly for me, it’s flat. Too many trackers today are bulbous, round, curved, or some combination of the three, and really shouldn’t be. If a tracker is meant to sit with keys, make it key shaped. Thin, longer than it is wide, and flat. Another solid design choice is that the mounting hole is the same width as the body of the tracker, so it sits flush against your keys. Trackers with a thinner hang loop than body likely hang at an angle to the keys they are next to which cause them to take up more space than they should and cause them to fall into your pocket awkwardly. The only thing I would change if given the choice would be for it to have a molded, unibody design which would possibly make it waterproof rather than water resistant, but it would likely increase the cost as well, so it’s a reasonable allowance to the design. If you use a key organizer like orbitkey’s, or some other brand, this is the tracker to get. If you like your keys to be organized and take up minimal space, this is the tracker to get. If you’d prefer a tracker that can get wet without needing an aftermarket protector, this is the tracker to get. I’m curious to see how durable it is, but I’m optimistic.