Important InformationMaterial: PlexiglassPackage Size:Compass: 8.2cm x 6.2cm x 3.5cm/3.23" x 2.44" x 1.38" (Approx.)Spring Rope (Normal): 88.5cm/34.84" (Approx.) Overview:You can read the orientation data more easily through its view on the side of the window and the red reference line. And it can prevent tilting and rubbing against the window frame and causing jamming in non-horizontal conditions. You will rotate the scale ring to set the target direction because of its positioning post design. And it will absorb sunlight, lights and other light sources that can emit night light in dark conditions due to its liquid-filled light-absorbing design. Made of plexiglass and ABS material, it is very durable to use. The compass is 8.2cm long, 6.2cm wide, and 3.5cm high. Suitable for deep-sea operations, diving, underwater, water sports, tips and so on. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Specifications:Underwater diving depth: le; 50mPurpose: Underwater TipsFeatures: Comfortable Reading, Luminous, Precise ScaleStorage Temperature: -22 degrees Fahrenheit-140 degrees FahrenheitUnderwater Operating Temperature: -30 degrees Celsius-60 degrees CelsiusPackage Contents:1 x Diving Compass1 x Elastic Cord Strap1 x User Manual