The Pond Logic Floating Pond Thermometer makes keeping track of your water temperatures simple and fast, A built in float and 6 foot tether keep the Pond Logic thermometer at the surface of your pond and within reach, A color coded display is divided into 3 ranges for temperature readings with just a glance, Built in float keeps thermometer within reach, 6 foot tether holds thermometer securely in place, Color coordinated temperature zones simplify readings, SKU: AES408