This sonar sensor is a compatible accessory for LUCKY fish finders. Features: - Wireless sonar sensor designed for LUCKY fish finders - Depth range up to 45 meters - 90-degree beam angle, 125 kHz sonar frequency - Durable plastic construction with watertight seal cover and sealing ring - Powered by a replaceable CR2032 battery - Integrated mounting holes for secure attachment of fishing line, enabling easy casting Note: - D model supports depth-only functionality - D+T model supports both depth and temperature measurement - D model is compatible with basic fish finders: FFW1108-1, FFCW1108-1 - D+T model is compatible with most LUCKY fish finders, including FFW718, FF518 Specifications: - Material: Plastic - Model: D / D+T (selectable) - Depth Range: 45 m (147 ft) - Beam Angle: 90 degrees - Sonar Frequency: 125 kHz - Dimensions: 7.8 × 5.5 cm (3.1 × 2.2 in) - Weight: 45 g (1.6 oz) Package Includes: - 1 × Sonar Sensor for Fish Finder