Item No FF202 Brand Lucky Material ABS Backlight Whiteled Sonar Frequency 200KHZ Sonar beam angle 45 degree Depth capability 100M(328FT) Power requirment 3.7V lithium battery Waterproof design level 4 (spray-water-proof) This model is simple & convenient take ,which it more easy to operate. Function: 1. This item can detect the fish icon: small fish,medium fish,big fish. 2.This mode wide detection can detect wide area fish condition in different underwater area. 3.It also can clearly detect in turbid water . 4.Anti-clutter can exclude sundires. 5.This mode can Ice fishing. 6.This model detecting water depth is:100M(328FT) Attention: Please don't test in the smooth place and hard ground (like the swimming pool) which the transducer sonar can effect by the smooth place and the digital will not correct. Please use it in the outside water area. Manual: English/Russian