The HawkEye? Digital Depth Sounder (DF1000D) is designed to give precise depth readings from 2.5 to 200 feet, up to 63 mph. Utilizing a sophisticated microprocessor, the DF1000D reacts instantly to changes in depth, and will warn you of depth changes using the built-in 3 Stage Advanced Warning System?. The DF1000D mounts in a standard 2-1/8" gauge hole, or can be surface mounted using HawkEye's exclusive MB01 mounting bracket. The DF1000D's auto-ranging, auto-sensitivity features ensure precise readings under any condition. Features: Depth readings from 2 to 200 feet. High-speed operation up to 63 mph. 250 watts of transmitting power. The largest Liquid Crystal Display Available. Backlit programming keys. Includes white and black interchangeable faces. Transducer can be glued in-hull or transom mounted. Completely Waterproof Face. Auto Range and Sensitivity Adjustment. 2 Year Limited Warranty.