1. FISH FINDER: Perfect for fishing enthusiasts, this Fish Finder is versatile for use in rivers, lakes, and seas. It accurately helps you locate fish and measures water depth. Compact size: approximately 12 x 7.5 x 2.5 cm (4.7 x 3.0 x 1.0 in). Depth range: Maximum 100 meters (3937 in); Minimum 0.7 meters (27.6 in). Provides depth measurement in either meters or feet. Features include a fish depth scale, fish size identification, and an alarm for detecting fish activity. 2. SONAR BEAMS: Utilizes advanced sonar technology based on sound waves to map underwater structures and bottom contours. Sensor angle of 45 degrees. Operating temperature range: -20 to 70 degrees Celsius. Requires 4 AAA batteries (not included). 3. LCD DISPLAY: The user-friendly display presents essential information clearly for quick comprehension. Continuous usage time of up to 24 hours. Equipped with a 10-meter (393.7 in) cable and a 2-inch TN/AntiUV LCD display featuring a green LED backlight. Sonar frequency of 200KHz ensures precise readings. 4. PACKAGE INCLUDES: Neck strap for convenient carrying, ideal for hands-free use. Package contents: 1 Fish Finder, 1 User Manual, 1 Sonar Sensor, 1 Neck Strap, 1 Bolt, and 1 Wing Nut. Suitable for various fishing methods including boat fishing, ice fishing, and shore fishing in both freshwater and saltwater environments. This Fish Finder combines practicality with robust performance, making it an essential tool for any angler seeking to enhance their fishing experience.