Professional:this compass can help you quickly identify the direction,especially suitable for hiking,camping and military purposes.used in emergencies and on different occasions. Portable:this compass can be folded,easy to carry and very light.after folding:the size is 7.7x5.8x2.5cm.weight:85g.no battery required,can be carried at any time,epecialy suitable for outdoor use. Material:high-quality aluminum alloy and ABS materials are used to achieve lightweight in addition to beauty. Durable:waterproof,resistant to low temperature,anti-fog,can be used in a variety of occasions. Accurate:place it in a horizontal position when using,and you can point it in the right direction quickly and accurately.