Features: Clear LCD screen to easily know battery power,water depth,temperature,fish icons,etc. Supports 45° sonar detect angle with depth detection range from 2.6ft(0.8m) to 295.3ft(90m). Blue & green fishing lamp with brigh lights,effective to attract fishes.(NOTE: This lamp only works on some fish that are sensitive to light.) IP68 waterproof,excellent performance for durability. The fishfinder is powered by 4*AAA batteries(not included). Suitable for fishing from a kayak, off the dock,and ice fishing.  The measurement unit of the depth can be freely switched by feet or meter. Specification: Material: ABS LCD Screen: 47 * 18 mm / 1.9 * 0.7 in Sonar Radiation Angle: 45 degrees Detection Depth: 0.8 - 90 meter / 2.6 - 295.3 ft& 65288;standard environment) Sonar Frequency: 200 KHZ Working Current: 45 mA Measure unit& 65306;Meter / Feet Waterproof: IP68 Waterproof Depth: 30 meters Brightness: 200 - 300 mcd Power Supply: 4* AAA batteries (not included) Working Temperature: -20& 8451; ~ 50& 8451; Size: 54 * 195 mm / 2.1 * 7.7 in Weight: approx. 234 g / 0.5 lb Package Weight: approx. 352 g / 0.8 lb Package List: 1* Fishfinder 1* User Manual