Fangrui Product Details Easily Catch Fish. Fish Finder - Smart Portable Fish Finder With Wireless Sonar Sensor For Lake Sea Fishing. Host: Maximum Dimensions:l 6.2 X W 3.9 X H 1.57 Inch Weight:about 270 G Display Type:tft Lcd Sunlight Screen Display Size:3.5 Inches Display Resolution:480*320 Language:chinese/english/russian Unit Of Measurement:m/ft,charging Voltage:dc5v Type-c Working Temperature:-4-140storage Temperature:-4-158wireless Probe: Detection Depth Range:2.6-164 Ft Sonar Frequency:125 Khz Sonar Radiation Angle:105 Dimensions:2.8 X H 2.2 Inch Weight:about 80 G Charging Voltage:dc5v Working Temperature:-4-140storage Temperature:-4-158charging Time: About 2 Hours Colour:black Material:plastic Package Contents: 1 * Smart Fish Finder Kit Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.