Portable Fish Finder Portable and lightweight: compact design weighing 230 g, easy to carry in a tackle box or backpack for any fishing adventure. Comprehensive fishing data: instantly shows water depth, fish depth scale, and water temperature to help you target suggested fishing spots and reduce time waiting by the float. Effective sonar technology: uses a 125 kHz sonar frequency with a 90 degree radiation angle, providing reliable readings up to 36 m (120 ft) in a variety of fishing conditions. Userfriendly design: bright yellow color and intuitive interface make it easy for both beginners and seasoned anglers; the included user manual provides quick setup instructions. Use scenarios Pond or lake exploration: quickly determine depth and temperature zones to identify likely fish hotspots and structure. River or moving water fishing: compact device that travels with you, offering depth and temperature data as you drift or wade to adjust location. Boat, kayak, or shore sessions: small, portable unit fits in a tackle box and provides rapid depth and fish depth information to guide casts.