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 f a long time - selectable sensitivity Infmation to easily select fish accding to your different needs- Underwater structure display Convey infmation environment of the subsurface help identify fish targets - Power saving mode - Fish depth scale fish size distinction - Parameter setting memy scope: - Display Type: TN/Anti-UV LCD - Power: 4 AAA batteries (not included) - Sens 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