Another interesting and important feature is the wide mouth opening, which is compatible with various lids. You can use the hydro cap and take advantage of the wide mouth opening or use the straw lid built into
If an object is in the path of the pulse, the sound bounces off the object and returns an “echo” that helps to determine the object’s location. Sonar can be used to detect objects of different sizes--the technology varies from the simple “fish finder” used on recreational boats ...