Most fish finders are either handheld or affixed to a boat, but this floating sonar sensor attaches to your line (it weighs a mere 1 oz.) and has an operating radius of 75, transmitting real-time views of fish to the display unit you wear like a watch.

The sensor reads water depth up to 100, and its ultra-wide 90 sonar beam covers wide swaths of water to help you find the perfect spot to fish. All controls are easily commanded from the one-touch wrist unit, including the fish proximity alarm, sensitivity level, depth range, and fish identifier.

The remote sensor provides 400 hours of continuous usage, and automatically shuts off after it is removed from water to conserve battery life. The system comes with a wrist LCD, instruction manual , carrying case, and a total of two remote sensors. Not for use ice fishing. Wrist display runs on one CR2450 battery (included).

Sensor is ABS plastic. 2 H x 2 W x 2 3/4 D. (1 oz.)