Sturdy construction, relatively easy fingerprint manager setup, there is also a related video on the Internet. I don't have an opinion on the battery life yet since it's on its first charge. I will return when I have battery time. It charges easily and quickly even from a power bank. I don't know if it just happened to me, but the first one I received had a problem either with the battery or the charging, resulting in it not working unless it was plugged into a power source. It was replaced immediately and the new one works correctly. update 11/6/24 the lock generally works correctly, sometimes (very few) even though it recognizes the fingerprint, it doesn't open, with 1-2 attempts and moving the hook a bit, it opens. Also, if you use it on a daily basis, for example at the gym, it will last about a month. In case the battery runs out, the lock automatically unlocks by itself.