材料： ABS料
颜色：黑色为主
尺寸： 30 * 85 * 20毫米
净重： 0 028千克
功能：
1 ，吹口哨
2 ，指北（南）针
3 ，温湿度计（环境温度心中有数）
内置温度计
温度测量范围： - 30到50 ℃或 - 20到120华氏度
4.放大镜（隐藏）
这个小哨子，并与指南针，温度计的功能，并配有挂扣，可以方便在腰间挂，携带方便。 在野外，这几个都是非常必要的工具，可以及时提供帮助
本产品适用于出差，聚会，现场活动和各种竞赛活动使用。

Material: ABS material
Colour: black is given priority to
Size: 30 * 85 * 20 mm
Net weight: 0. 028 kilograms
Functions:
1, whistle
2, refers to the north (south) needle
3, hygrometer (environment temperature know fairly well)
Built-in thermometer
Temperature measurement range: - 30 to 50 ℃ or - 20 to 120 degrees Fahrenheit
4. A magnifying glass (hide)
This small whistle and also with the compass, the function of the thermometer, and equipped with hang buckle, can go to the lavatory to hang in his loins, and convenient to carry. In the wild, this a few are very necessary tools, can provide timely help
This product is suitable for travel, party, field activities and various competition activities to use.