Features: Made of zinc alloy material, it has excellent durability and corrosion resistance, and can be used for a long times in various environment. Automatic calibration: The compasses rotates the dial with printing line to confirm accurate scale, ensuring that the compasses always point norths. High precisions positioning: This automatic compasses adopts a great inner cores and night lights system, with clear and easy to read dial scales, providing accurate positioning and navigation functions to help users accurately find direction. Clear and easy to read: The scale and indicators on the compasses are clear and easy to read, allowing users to quickly obtain directional information, whether it is used during the day or night. Compact and portable: compact and lightweight, easy to carry, and ready to use at any times. Suitable for outdoor activities, camping, hiking and other scenarios. Specifications: Material: Zinc Alloy+ABS Size: Approx. 9x6.2cm/3.54x2.44inch Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Compasses