Features: The Wrist Strap style is convenience to wear and allows for quick and simple viewings of direction. The Luminously Dials can see even in dark environment. It can accurately display orientation, with sensitive and stable pointers, providing precise navigations information to help users quickly determine current position and targets direction. Suitable for divings use, with superior Waterproofs performances, ensuring accurate direction indication even underwaters and resistings various environmental tests. It can used for outdoor activity such as divings, camping, and hikings, and is essentially equipment for explorers, photographers, traveler. Adjust wrist strap, suitable for different wrist size, comfortable suitable to skin, not easy to slip down, providing a stable wearings experience, ensuring safe use. Specifications: Materials: ABS and rubber Diameter: about 6.50cm/2.56inch Package Includes: 1pc Compasses note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.