From my previous and current experience with Fitbit devices clasp. I have never had a problem with a clasp wearing or breaking. I had my Fitbit Flex for 2 yrs with no problems. The new band and clasp design on the Alta's are very durable. I struggled with getting it clasped the first couple times because it was so new. It has loosened just right to make it easier for me to clasp one handed now. Hope this helps.