I have the Nokta. I do indeed like it alot but....putting the battery in and not paying attention to its position will cost you. Not sure how much yet. I have sent mine in for repair.Take a look at the Xpointer Pro line, by Deteknix. Their Wader model is waterproof to 10 feet, just like most other waterproof pointers. But when separates it from all the others is that it's dual-powered, being able to accept both 9v batteries and AA batteries.
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The Whites TRX is also dual powered. It takes both 9V and AA.