I purchased this last week for my wife's 38 mm Apple Watch. She wears a regular mechanical watch during the day and wears an Apple Watch while working out to monitor Heart rate and distances. She was looking for some sort of clip (similar to that of a clip on FitBit) so she could wear the Apple Watch during the day and continue to monitor steps. This is the PERFECT solution. Not only does it solve the "issue" she had but it is very well made and top quality. It's sturdy and clips right to her clothing without any issues. She very happy with it. Thanks for making such a great product!