Deeper is a portable wireless smart sonar, which you can connect to smartphone via app. Company announced it as a new product with a slogan "We know where the fish are hiding. Find them with your smartphone". The device consists of a small ball with the fastening parts.
A fisherman can use it to know water temperature, depth (up to 40 meters), explore bottom structure. The sonar can see the most of fish species with a crystal clarity, and allows you to target prey with confidence.
Also, by using deeper's app you can join global community of smart fishermen and inspire others by sharing catch.