I'm unsure... I just pulled it out of the wrist strap boot and don't see any markings. Maybe Sludge will chime in with some of his scubapro uwatec knowledge. Sorry!
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I did 300' with previous Scubapro BT before some individual from Canada on this forum "bought" it from me without sending me money. I now have a metric version of it for about 4yrs+. It has avg.depth reading which is nice for deco on fly. This is the ultimate depth gauge, super reliable and fool proof. One draw back (or advantage) however is that battery is not replaceable.
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