1. Shell: environmentally friendly ABS, chemical resistance, heat resistance, high elasticity and toughness 2. Dial: the use of aluminum spray as the dial of the printing material, high temperature resistance, not deformed, clear and beautiful 3. Sphere: transparent part of the use of high-transparency acrylic, high-temperature explosion-proof in the car, better visibility 4. Magnet: 1000 gauss strong magnetic steel inside, faster response to the earth magnetic field, which can provide accurate direction indication 5. Accurate pointing, clear scale, good stability, the dial can be rotated freely 6. 360-degree rotating design, gently flick to turn, to find a comfortable viewing angle 7. Double-sided adhesive on the bottom, solid adhesion, so that the guide ball is stable operation 8. Vertical up and down swing, adjustable, adjust the appropriate viewing angle 9. Size: about 8 x 5.6 x 6.5cm 10. Weight: about 80g