Easy to Read: High Quality quartz movement nurse Clip-On fob watch with Glow Pointer in the dark, ideal for night shifts, very easy to read. Please make sure that the product you purchased is SibyTech and comes from Sibyshop. For the Prefect product and Excellent After-sales Service. Easy to Carry: Silicon Rubber Housing with Security pin and soft material, will keep it properly attached on Pocket/Stethoscope Easy to Sterilize: Ideal for infection prevention and control, Dial can be separated from casing easy to sterilize, Suitable for nurses and any other medical professional (medical clinic workers) For daily waterproof use only, can't be soaked into water (Not suitable for swimming, diving, shower, etc.), TIPS: Let the watch absorb light sources before they Glow in Dark Package include: 1 watches. Length:3.35" (85mm), Diameter:1.57" (4mm), Thickness: 0.39"(10mm)