Navigational Compasses descriptions： We use high-quality raw materials, all materials are very suitable for the product, please rest assured to buy. Waterproof Navigator Digital Watch Scuba Compass For Swimming Diving. Features: 1With a Luminous Display and an Aiming Observation Window, the Illuminated Dial is Bright Enough to Dive. Water Resistant to 60 Meters / 197 Feet, and Shockproof, Comfortable to Wear . The Pointer is Stable and Will Never Be Magnetized. 2The Compass is Designed with a Watch That is Light and Portable and Easy to Use. Both Top and Side Readings Are Easy to Use in a Variety of Situations. 3High Quality Glass Compass Lens Woven Wristband and Durable. 4The Luminous Dial Will Also Be Bright at Night, and It is Easy to Use. If the Brightness is Not Enough, You Can Put It in the Bright Place and Re-absorb It. 5Suitable for Outdoor Activities, Outdoor Activities, Underwater Caves, Camping, Hiking, Cycling, Hunting, Etc. Specifications: Material: Glass, Nylon Underwater Working Temperature: -30 °C-- + 60 °C (-22 °F--+140 °F) Maximum Error: ± 2 ° Tilt Correction: Maximum Limit ± 18 ° Underwater Dive Depth: 60 Meters Model Size: About 48mm/1.89in(length)*42mm/1.65in(width)*13mm/0.51in(height); Belt Length: About 28.8cm/11.34in; Bandwidth:about 2cm/0.79in Package Included: 1*diving Compass. Products number : SOMONO129681