Tempered glass breaks when hit. Yes. But the watch remains protected, and that's the goal. They don't fill up with sweat on a hot day like TPU bin liners do. They also detach and continue running without removing the watch strap, making cleaning quicker. In terms of costs, I'm keeping the additions now, because unfortunately I can roughly get by with the watch. My hands are used all day at work, so I keep bumping into walls. Without these advocates, I wouldn't be able to wear an Apple Watch to work, which as a business owner I actually use a lot as I receive calls and messages throughout the day. Don't waste your time with TPU. Get them and feel better about protecting your watch with no hassle. Oh, and it looks respectably installed. There's nothing like watching naked, but it's very acceptable.
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