NOS. This was grandfather's.  This was new in the package still in 2022 when I used it to retrieve a phone from about 8 ft of water. Worked as it should with no problems. Listing it as "new other" for it was used for about 20 minutes, and put back in correctly controlled storage.  Definitely a conversation piece and at the same time can be a life saving device.

This listing is for a vintage Dacor Model R-4 double diaphragm two stage regulator. This regulator is perfect for scuba enthusiasts looking for a reliable and functional piece of equipment. The brand, Dacor, is well-known for producing high-quality scuba gear, and this model is no exception.

The regulator is in great working condition and has been tested for functionality. It comes with only what you see in the pics. Whether you're a seasoned diver or just starting out, this regulator will provide you with the peace of mind you need to focus on your underwater experience.