Material: ABS.<br />Size: 20 * 63 * 30<br /><br />100% Brand and high quality<br /><br />Product Features<br />1?↓high decibel Survival whistle (whistle loud)<br /><br />2?↓refers to the North (South) pin (high accurate、 clear at a glance)<br /><br />3?↓thermometer (faster and more accurate the first time to grasp the current temperature)<br /><br />4?↓nylon lanyard (more convenient to carry、 rope about 40cm (can be hung around the neck)<br /><br />Side with a thermometer<br />On the other side with compass