LAIONTY Wristband Compasses for Diving Navigation Portable Detachable Watch Band Slip Slide Wrist Compass Emergency Survival Kit for Cam Boating Hiking Traveling Or Other Outdoor Activities

Specification: Item Type: Diving Navigation Compass Color: Black Material: Plastic Weight: Approx.9g/0.3oz Size: Approx. 31x26mm/1.2x1.0in Package List:1 x Diving Navigation Compass Note:1. Place or hold the compass and use it in a horizontal state to ensure accurate readings. (Do not place it on an iron table or other places that affect magnetism.)2. In order to avoid confusion of pointers, please keep away from objects containing magnetism and current, as well as some metal products (such as high?voltage lines, mobile phones, stereos, screwdrivers, magnets, etc.) when using them.3. Do not knock or pat the compass with your hands, so as not to affect the measurement accuracy.4. Do not leave the compass in the sun for a long time. (The temperature is too high or too low will affect the life of the compass.)5. Keep the shell and mirror surface clean and clean, don't wipe it with a dirty cloth.6. When not in use, please place the compass in a clean, cool place, away from magnetic materials, to avoid consuming the pointer magnetism.7. The compass operates according to the magnetic field of the earth's magnetism and does not require batteries.8. Please allow 0?1 inch error due to manual measurement. Thanks for your understanding.