Features:
Display type: 4 levels grayscale LCD V128 * H96 with white LED backlight; backlight brightness is adjustable.
Depth reading from 2.0 to 120ft (0.6-36m) in 1/10th precision.
Bottom contour & water temperature indicator.
10-level sensitivity setting & multi levels depth range.
Auto zoom bottom tracking & quick manual zoom.
Stop chart at any time.
Big/small fish identification & fish depth indicator.
User selectable feet or meter reading.
Audible fish & depth alarm, depth alarm 3-99ft (1-30m).
125 K Hz sonar frequency.
4pcs AAA batteries for power supply (not included).
Sonar sensor with built-in rechargeable lithium battery.
Lightweight & portable, perfect for ocean, river, lake fishing, etc.