Outdoor Dive Noctilucent Compass Professional Waterproof Navigator Digital Scuba Luminous Balanced Watch For Swimming Underwater Product name: diving compass Purpose: underwater guidance Model: the CP - 992 Weight: 90 g Material: ABS+ Plexiglas Underwater operating temperature: -30℃ to 60℃ Underwater working depth: less than 50 meters Specifications: 8.2*6.2* 3.5cm Elastic rope: 88.5cm Colors black, blue, yellow, gray 1. Triangle indicating arrow + side view window 2. Scientific balance + accurate data 3. Luminous compass + detachable elastic rope binding band 4. Enclosed is a manual in English Not: 1. Diving compass uses liquid damping. Please do not leave it in the sun for a long time, so as not to affect the normal function of the compass. Exposure will cause the product to generate blisters of abnormal size. 2. Metal objects will affect the display of the compass, so you should try to stay away from vehicles, cameras or other metal objects when locating or interpreting directions.