?Fishing Gift & Fishing Gadget : Depth fish finder is a helpful fishing gadget in lake fishing or dock fishing. Meanwhile, if you are looking a gift for fish men, it is a now better choice than ever. These portable fish finders can be given as a gift on Christmas, New Year, Thanksgiving, Valentine’s Day, birthdays, Father’s Day or Mother’s Day. ?Easy to Use: Portable boat sonar is easy to use and understand. Cast the sonar into water or fix it to the bottom of boat is the general way to use the handheld depth finder. Meanwhile, the depth finder portable enables to find fish that swims under the ice layer by putting the handheld transducer sensor on the smooth ice which helps you drill a fishing hole more effectively in ice fishing. ?Other Helpful Functions : Transducer fish finder will give you alarm in time when fish or fish schools passing by. Meanwhile, the depth finder portable is suitable for either fishing in clear water or turbid by adjusting the sensitivity to different levels. Turn on the battery save mode, the boat fishing finder could be working continuously for at least 4-5 hours with brand new battery. ?Portable and Handheld : The dimension of the transducer fish finder is 5.71 x 4.33 x 3.7 inches,it is just as big as your hand. It's freely to hang it around neck or put it into the pocket. The handheld fish finder also gives you the information in water, which includes short & tall weeds and sand & rocks on the bottom. The back light is available and it helps you to read data both in sunshine or at night. ?Accurate Data Display : The kayak fish finder displays the fish depth, water depth and approximate fish location and it's popular in fishing gear. The transducer fish finder detects the water depth range between 3ft(1m) and 328ft (100m) when the sonar sensor is completely immersed in the water. The sonar transducer could be attached to the boat hull or the kayak bottom as well. The measurement unit can be switched by feet or meter.