HD Chinese wireless and wired fish finder

Display: 2.4 inches TFT color LCD
Backlight: On/Off white LED
Depth capability: 328 feet (100m)
Sonar coverage: 45 degree beam angle in 200Khz
Power supply: 3.7V lithium battery
Waterproof design: Level 4 (splash-proof)
Water depth, water temperature, fish position, bottom contour can be continuously received from the water