The OLYMPUS PT-054 is waterproof, comes with a strap, and features a locking mechanism. - Brand: OLYMPUS - Model: PT-054 - Waterproofing: Waterproof - Accessories: With strap - Controls: With locking function Thank you for viewing. It has only been used about 2-3 times and there are no problems with its waterproofing function. I am selling it because I have fewer opportunities to use it. There is some minor wear and tear, but there are no noticeable scratches or stains, and the condition is good. Everything in the photos is included. Please understand that this is a used item before purchasing.