Portable handheld depth finder Portable and compact: easy to carry on fishing trips due to its small size and lightweight design. Ideal for popping in a tackle box or glove compartment. Battery powered: operates on 4 AAA batteries (not included), providing flexible, offtheshelf power wherever you fish. Clear, actionable readings: depth detection range up to 100 meters with a contrast highlight display for quick and easy visibility. Adjustable sensitivity: and low sensitivity settings let you tailor performance to different water conditions and target bottom structures. Quick reference: includes a position depth scale to help you interpret depth changes at a glance. Broad compatibility: suitable for boats, kayaks, lakes, ice fishing, and sea fishing. Use scenarios Kayak or small boat on a lake: quickly identify depth contours and weed lines to target productive areas while navigating safely. Ice fishing: check water depth under the ice to select productive fishing spots and plan your hole placement. Coastal or nearshore boating: monitor depth changes to avoid shallow areas and appreciate underwater topography while cruising.