Smart flute M. compass thermometer function

features:
1, Flutes (nuclear design, which increases the volume of the flute)
2, Compass - Refers to the north (south) pin (precise, clear)
3, Hygrometer (ambient temperature a pretty good idea)

This little flute also has a compass, thermometer function. In nature, when these are much needed tools that can provide timely help.

This product is suitable for tourism, meetings, outdoor activities and various competition events.