USED Marathon Search and Rescue Medium Divers Automatic Wristwatch Black. Unlike most watches made for diving these Watches from Marathon Watch have a hardened scratch-resistant sapphire crystal that ensures maximum legibility. Ideal for both professional and amateur divers the Marathon Watch Search and Rescue Medium Divers Illuminated Wristwatch is illuminated with tritium gas tubes for up to 25 years. Self-illuminating tritium gas tubes on this Marathon Watch Medium Divers Automatic Wristwatch ensure you'll always have a light source in the event of an emergency. Ideal for all weather and lighting conditions the Marathon Watch Search and Rescue Medium Divers Automatic Timepiece is a rugged and reliable watch that can withstand the turmoil of the high seas. Specifications for Marathon Search and Rescue Medium Divers Automatic Wristwatch: Manufacturer: Marathon Gender: Unisex Band/Strap Color: Black Case Color: Black Case Material: 316L Surgical-Quality Stainless Steel Case Diameter: 36 mm Bezel Finish: Stainless Steel Band/Strap Material: Vulcanized Rubber Wrist Band Type: Strap Illumination Type: Tritium Water Resistance Level: Water Resistant Country of Origin: Switzerland Age Group: Adults Package Contents: Marathon Search and Rescue Medium Divers Automatic Wristwatch Marathon WW194026SS-0130: Search and Rescue Medium Divers Automatic Wristwatch Black