Designed for nurses, doctors, medical students, and EMT workers Highly visible red second-hand makes taking accurate pulse readings a breeze;15-second intervals quadrant pulse ring for easy taking vitals. Perfect for low-light situations Reliable 3-Hand Japanese Quartz Movement Featuring a Gream Dial with 12 & 24 Hour Markers;Luminous dial that illuminates strong green light after absorbing light energy storage or exposed to the sunlight. SIZE & PACKAGING Case Diameter: 38mm/1.5"Case Thickness: 8mm/0.31"Strap Width: 18mm/0.71"Strap Length: 155mm-215mm/6.1"-8.4"Package Included: Watch * 1; Original Watch Box * 1; Instruction Manual * 1 FEATURES & MATERIALS 12 & 24 Hour military time markersHighly visible red second handLuminous display (After absorbing light energy storage)Anti-scratch mineral dial windowSurgical grade stainless steel case backFlexible and soft silicone strap 5 ATM WATERPROOF With a 5ATM waterproof rating, our nursing watch can handle medicinal liquid splashing, hand washing, and rain. Please note that it is not suitable for bathing with warm water, or steaming.Extreme temperature changes can cause moisture to form in a watch face. Lay the watch in the sun face up so the heat from the sunlight can dry out the moisture in the watch.