Aquastar Benthos 500 II limited edition (300) reissue of the iconic Aquastar Benthos 500 from the 1970's. The Benthos 500 was the first dive watch to offer a 500 meter water resistance. While the Benthos 500Ii is an accurate rendition of the original, it has several improvements. First off the watch is slimmer due to the use of a different movement. It also incorporates a sapphire crystal as well as a Ceramic bezel insert with superluminova numbers and markers. the movement is a higher beat movement than the original as well. This watch is very lightly used and has no scrapes scratches or outward use markings. the crystal is perfect. The watch is keeping accurate time and the 60 minute totalizer works and sets as it should. While many folks call this a chronograph, it is not in the strictest sense of the word. the orange hand is a 60 minute totalizer which is useful for dive timing. or anything else you want to time for up to 60 minutes Specifications: From Aquastar Case: Aesthetics of the original Benthos 500 from 1970, Height reduced to 15.4mm Dimensions: 42mm 316L Stainless steel (47mm lug-to-lug), 22mm lugs, Pusher at 2:00, Crown at 4:00 Movement: Caliber 1MPS Swiss-made Top grade, hours, minutes, seconds and center 60 minute counter. Crystal: Flat, triple-coated AR sapphire. Dial: Semi-gloss Black, applied hour markers with high density SuperLuminova filling. Bezel: Unidirectional 120 click rotating elapsed time ceramic bezel with SuperLuminova filled application.