For sale is my Marathon Jumbo Day/Date Automatic (JDD) — a serious-duty military dive watch made for actual deployment scenarios. This 46mm tool watch is powered by the Sellita SW220 automatic movement with Incabloc shock protection, and features a bilingual day/date display (English/French). Originally purchased in February 2018, the watch is in excellent used condition and runs strong. It comes on the original Marathon black diver’s rubber strap with extension, and includes an extra OEM orange vulcanized rubber strap for a bolder look. Both are Marathon-branded and genuine. ⸻ 🔧 Specs: • Model: Marathon JDD (Jumbo Day/Date Automatic) • Case Size: 46mm • Thickness: 18mm • Lug Width: 22mm • Movement: Sellita SW220 (automatic, 26 jewels, Incabloc) • Calendar: Bilingual Day/Date (English/French) • Crystal: Sapphire • Lume: Tritium gas tubes + MaraGlo • Bezel: Uni-directional 60-minute dive bezel • Case Material: Brushed 316L stainless steel • Water Resistance: 30 ATM / 300m • Straps: OEM black diver’s strap (mounted) + OEM orange vulcanized strap (included) • Box/Papers: Not included ⸻ ✅ Condition: • Purchased February 2018 • Excellent overall condition for its age • No major dings or deep scratches; just light wear consistent with careful use • Crystal is clean • Movement runs strong with no issues • Both straps in great shape — no cracks, tacky feel, or damage • Timestamped photos and video available on request ⸻ 💬 Seller Notes: I’m new to WatchExchange but have years of experience selling high-value gear on Reverb, where I run a top-rated store called UnrulyTones focused on high-end musical instruments. 👉 https://reverb.com/shop/unrulytones Happy to verify the watch live over FaceTime or Zoom with serious buyers to establish confidence. ⸻ 💵 Price: $1,300 OBO • CONUS shipping only • Fully insured via UPS or FedEx • Payment via Zelle or PayPal F&F (G&S if buyer covers fees) • No local pickup offered Feel free to reach out with questions or to request additional photos — thanks for looking!