feature: - sonar beam 200KHz sonar beam, stable signal, effectively prevent signal interference - fish alert Allows you to catch fish instantly without looking at the buoy for a long time - selectable sensitivity Information to easily select fish according to your different needs- Underwater structure display Convey information and environment of the subsurface and help identify fish targets - Power saving mode - Fish depth scale and fish size distinction - Parameter setting memory scope: - Display Type: TN/Anti-UV LCD - Power: 4 AAA batteries (not included) - Sensor beam angle: 45 degrees - Depth range: 0.7 - 100m / 2 - 328 feet - Operating temperature: -20 - 70 degrees Celsius - Material: High quality ABS Packing weight: 0.45 kg Package Dimensions (L x W x H): 26.50 x 16.80 x 6.00 cm / 10.43 x 6.61 x 2.36 inches