Up for sale is my gently used Sinn U50 SDR. It has a case made of German submarine steel with a black Tegimented bezel - Sinn's scratch-resistant hardening process. The watch is in excellent condition with no visible scratches on the Sapphire crystal anti-reflective coating. The lugs show minor wear from contact with the steel bracelet. Although I don't have a scientific way to measure time-keeping accuracy, it maintains excellent accuracy. The watch was from Watchbuys, an authorized dealer. I love Sinn and the quality of construction, durability, and aesthetics. I prefer dress watches, so this beauty sees little wrist time. \- Photo album: [https://imgur.com/a/75bc1Ym](https://imgur.com/a/75bc1Ym) \- Timestamp: [https://imgur.com/a/phdV2r5](https://imgur.com/a/phdV2r5) **The following items come with the watch:** \- Original packaging: Box, manual, and Sinn guarantee card.- Sinn steel bracelet (clasp shows minor wear and scratches consistent with normal wear). \- Marathon Vulcanized rubber strap in black (new and unused).- CNS Seal strap in black and black with a red stripe (new and unused). \- CNS adjustable single pass strap in black (new and unused).- Spring Made Deluxe Mesa strap in Black (lightly used - fixed keeper removed). \- Fat heavy-duty 316L stainless steel top-quality shoulderless spring bars. Perfect for the included CNS and Spring Made straps or any NATO. **Here are the specifications of the watch:** \- Watch diameter (mm): 41.0 \- Watch height (mm): 11.2 \- Lug width (mm): 20 \- Lug to lug (mm): 47 \- Weight - head only (grams): 74 \- Water resistance: 500 meters \- Case Back: Solid \- Case Finish: Matte \- Case metal: Submarine steel \- Dial Color: Black \- Front Crystal: Sapphire \- Tegimented: Bezel only \- Movement: Automatic mechanical. Sellita SW300-1. The self-winding mechanism has 25 bearing jewels, 28,800 semi-oscillations per hour, seconds stop function, and is anti-magnetic as per DIN 8309 \- Crown at 4 o'clock to prevent pressure on the back of the hand \- Date display at 3 \- Low-pressure resistant \- Sapphire crystal with double-sided anti-reflective coating \- SuperLuminova on the hands and hours (glows green) $1,899 (firm) with payment via PayPal G&S for your protection. Price includes PayPal G&S fees and fully insured shipping CONUS only. No trades at this time. Happy to FaceTime or Zoom for additional verification. Please comment before sending a PM. Thanks!