This amazing Fishfinder is specially Designed for Amateur and Professional fisherman alike. The Unit can be used in Ocean, River or Lake and is fantastic for detecting schools of fish. Has 2 user mode: Transducer Mode- can indicate fish found in 45° beam angle and Wireless Mode - can indicate fish found in 90° beam angle. Features: Selectable Depth Unit : Meter / Feet High frequency °C / °F temperature unit Blue, Orange or Grey Selectable in Color Tone Menu Features Display bottom changing contour High/Low sensitivity setting Audible fish and depth alarm Water temperature and battery strength indicator With Simulation mode Zoom in and out feature Display Large and Small Fish Icon Use Antennas 100% waterproof design: floating main unit and sensor Specifications: Fish Finder (Main Unit) Floating & waterproof, matte surface Display: 2.8inch color TFT LCD Display 240*320 (RGB) Language Menu: English and Russian On Screen display: water depth, water temperature, fish location depth, current bottom contour (bottom contour display changes as the sensor moves) Operational Wireless Frequency: 433.92MHz Anti-clutter system: automatically filter noise and gain high accuracy Backlighting: On/off White LED Power Input: 3.7V rechargeable lithium battery Charge Voltage: AC 5V, 1A Running Time: 20 hours (depend on actual using and working status) Wireless Sonar Sensor Cable Transducer Length: 6M (20ft.) Depth Capability Cable transducer : 328ft (100m) @ 200Khz Wireless: 147ft (45m) @ 125Khz Sonar Coverage Cable transducer: 45 degrees beam angle wireless: 90 degrees beam angle Wireless Operational Range: 328ft (100m) Built-in temperature sensor Power Supply: 1 x CR-2032 Lithium battery Approval: CE Approval Set Includes: 1 x Colored LCD Fish Finder 1 x Sonar Transducer with cable 1 x Wireless Sensor 1 x Charger Plug 1 x USB Charge Cable 1 x Neck Strap 1 x Vehicle Cigar Plug Charger 1 x Warranty Card 1 x English Instruction Manual Standard Factory Packaging