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:-4-140 Storage temperature:-4-158 Wireless 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:-4-140 Storage temperature:-4-158 Charging 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.