Feature: 1. 4 gray-scale LCD V128XH96 dot matrix display with white screen backlight. 2. Level 10 sensitivity setting, automatic and manual selection of depth range, automatic scaling and manual scaling by shortcut keys. 3. The wireless transmitting/receiving frequency is 433/315 MHz, and the maximum receiving distance of the wireless signal is up to 60 meters/196.7ft. 4. With any locking screen, the user can customize the unit of measurement, meter or foot. 5. The sonar sensor is powered by a lithium battery with a charging voltage of 5V. Specification: Condition: Item Type: Fish Finder Material: ABS Color: Black and Yellow Model: FF268W Signal Receiving Distance / Line Length: Approx. 7.5M/24.6ft Detection Depth: Approx.36M/118.1ft Detection Angle: 90 Degrees Built-in Rechargeable Battery in the Probe, Built-in Rechargeable Battery in the Host Full Battery Life: Host 32H / Probe 18H Menu Language: English (Single Machine Single Language) Screen Size: Approx.2.4 x 40 x 50MM/0.09 x 1.57 x 1.97in Sonar Frequency: 125KHz Display Type: 4 Grayscale LCD V128XH96 Dot Matrix, White Screen Backlight Deep Detection Range : Approx. 0.6-36 M/1.97-118.1ftAccuracy Approx.0.1 Meters/0.33ft Underwater Contour and Water Temperature Display 10-Level Sensitivity Setting, Depth Range Automatic and Manual Selection Automatic Zoom and Shortcut Key Manual Zoom Arbitrary Lock Screen User Can Customize the Unit of Measurement: Meters or Feet Small Fish Icon and Depth Indicator Switch Fish and Depth Sound Alarm, Depth Alarm Setting Range: Approx.1-36 M/3.3-118.1ft Wireless Transmit/Receive Frequency: 433/315 MHz, Wireless Signal Maximum Receiving Distance Up to Approx.60 Meters/196.7ft 125KHz Sonar Frequency Built-In Lithium Battery Power Supply, with USB Charging Cable, Charging Voltage 5V Sonar Sensor Built-In Lithium Battery Power Supply, Charging Voltage 5V. Package List: 1 x Host Screen(Built In Battery)1 x Sonar Sensor2 x USB Charging Cable1 x English Manual 1 x Lanyard