SEIKO PROSPEX MARINE MASTER, a diver's watch with a rubber band, water-resistant to 1000m. Although it's all titanium, it has a considerable weight, a professional-use "Tuna Can" watch. Used less than 10 times, with no major scratches or stains. Under warranty, and one free quartz exchange. Purchased at Bic Camera Yurakucho, with a retail price of approximately 400,000 yen. Movement Caliber No. 7C46 Drive system: Battery-powered quartz Accuracy: Average monthly difference ±15 seconds Number of jewels: 7 jewels Functions: - Calendar (date and day of the week) function Case/Band Case coating: Super Black Diamond Shield Case size: Thickness: 16.3mm Width: 49.4mm Length: 49.4mm Glass material: Sapphire LumiBrite: Yes (hands, indexes, bezel) Band material: Silicone band Wrist circumference length (maximum): 210.0mm Watch specifications Water resistance: 1000m saturation diving water resistance Magnetic resistance: Yes Weight: 118.5g Other features - Anti-reverse bezel - Screw-down crown - One-piece structure Thank you for viewing.