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:With a balanced design, it prevents tilting and rubbing against the window frame and causes jamming in non-horizontal conditions. Having a side-view of the window and a red reference line, it allows you to be easier to read the orientation of the data. 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 Scale Storage Temperature: -22 degrees Fahrenheit-140 degrees Fahrenheit Underwater Operating Temperature: -30 degrees Celsius-60 degrees CelsiusPackage Contents: 1 x Diving Compass 1 x Elastic Strap for Diving