Specification: Item Type: Multifunctional Compass Material: Aluminium Alloy Size: Approx. 9x7x3cm/3.5x2.8x1.2in Weight: Approx. 213g/7.5oz Color: Army Green Function: azimuth measurement, coordinate ladder ruler, amplifier Package List: 1 x Compass 1 x Portable Bag 1 x English Instruction Note: 1. When using and placing the compass, do not approach ferromagnetic objects, high‑voltage lines, electromagnetic devices, etc., so as to avoid errors and reduce the sensitivity of the compass. 2. When not in use, it should be placed in a ventilated and dry place to avoid mildew. 3. Do not bend the head‑up mirror and the plate, so as not to affect the accuracy of its use. 4. When the surface is dirty, you can wipe the surface with white flannel to keep the surface smooth and clean.