Purchased this new 2 weeks ago. This is a fantastic watch that you won't see on anyone else and super high quality, but I am bored today and looking to sell or trade it. 🤣 The Neptunian is a 2nd Generation model. And different than the ones that say "Skydiver Neptunian" on the dial. The main differences are the bracelet is thicker compared to the original, which makes it way more wearable. Also, the lume is a bit nicer I have had the watch Bracelet center links professionally brushed. Looks fantastic and gives the watch a better look. Asking $590 paypal shipped Trade value around $700ish Open to TRADES for DIVE WATCHES. Not you grandpa's 1980s dress watch, your timex , or your moonswatch . Feel free to reach out if you have any questions. Diameter: 44 mm Thickness: 15 mm Screw-down crown Double O'ring Automatic helium valve Bezel: Stainless steel rotating diving lunette Glass: Sapphire crystal - Antireflection treatment on one side Dial: Black, Luminescent hands and/or indices, Date Movement: Swiss Made Automatic winding EDOX 80 based on SW200 Water resistance: Up to a pressure of 100 ATM (1000m)