Wireless Fish Finder Portable Fish Finder Handheld LCD Display Portable Fishing Sonar Wireless Depth Finders Color HD screen detaila : 1.This amazing product is especially designed for amateur and professional fishermen alike, to find out the location of fish, depth and bottom environments of water. The unit can be used in ocean, river or lake and is fantastic for detecting schools of fish in any particular area. 2.Fishes and bottom environments readout: fish finder portable detects and displays water depth, approximate fish location, short & tall weeds, sand & rocks on bottom. 3.Variety fishes fishing environments: It can be used for off shore fishing, kayak fishing, ice fishing, lake fishing, sea fishing and so on. You can also use handheld fish finder on the moving kayak with speed below 5mph. 4.Depth readout: The fish finder portable detector range is in a 105°cone underwater. The detection of depth range is from 2ft(0.6m) to 328ft (50m) below fishing sonar transducer. The water depth can be shown either in feet or meter. The fishing sonar sensor is with 25 ft cable . 5.Powerful functions: battery save mode; backlight mode; fish and fish school alarm. Features: Wide Color HD screen display. Depth readout from 0.6 to 50m. Fish alarm. Battery save mode. Selectable sensitivity. Fish depth scale. Water temperature indicator. Water-resistant design. Color HD screen, visible in the sun big size and big screen, product size 120*68*20MM. Both the main unit and the sensor are charged. Built-in antenna, up to 200 meters（max） . Specification: 1. Display Display: Dot Matrix LCD Display Size: 2.6 inch Display Dot Number: 240*320 Display Contrast: 10-100% Backlight: Highlight LED Backlight 2. Sonar & Radio Depth Range:0.6-50M Wireless Operating Range: 180m (max) Sonar Frequency: 120KHZ Sonar Beam Angle: 105 degree Radio Frequency: 433 MHz Operational Temperature: From: -20 ~70Celsius 3. Power Supply: Mainframe: Lithium battery 3.7V Transducer: Polymer battery 3.7V Package List: 1xMainframe 1xTransducer 1xMico USB 1x DC USB 1x Neck Strap 1x Instructions