Hawkeye DepthTrax 1H Handheld Depth Finder Temperature Reader [DT1H]DepthTrax 1H Handheld Depth Finder and Temperature Reader The DepthTrax 1H is a powerful handheld depth finder that produces instant, accurate depth readings up to 300 feet and temperature readings accurate to within 1 10th of a degree. Fully waterproof and built to last, its the only handheld SONAR depth finder on the market. Features: Waterproof up to 200' Depth reading from 2. 5' to 300' (0. 7 91. 5M) Read water or air temperature with up to 1 10th