I have a Mi Smart Band 5 strap. It was very easy to buy it because the plastic/rubber strap of Mi Smart Band 5 deteriorated within a year due to sweat and heat broke. I needed something I could use and forget when I put it on. When it first came, it was a bit difficult to get the device in and out of the slot, but that's kind of okay, especially if you want it to stay in place. Just remember to clean the platform grooves about weekly depending on usage. You want to go down a size. OVER TIME IT WILL STRETCH so go down a size and your gold. Otherwise, you'll need to bring it to your forearm so it's firm enough to read your heart rate. The only complaint is that the strap could be a bit wider so it doesn't feel as tight for the first few weeks. It's also unregulated, so keep that in mind. Otherwise a good buy!
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