This 2-in-1 portable waterproof fish finder features traditional and wireless technology in one compact and allows you to choose in either: Transducer: allows you to operate with Portable Cable Transducer Wireless: allows you to operate with the wireless sonar sensor Features: Multi-language Operation °C / °F temperature unit Simulation Mode Auto & Manual depth range Bigger & Adjustable high-contrast Screen High resolution Auto & Manual Zoom Function High frequency Adjustable Depth Alarm setting Sensitivity indicator for wired transducer Clear Large / Small fish icon with on / off features Battery strength indicator Displays live update of the Water Bottom Contour 100% waterproof design: floating main unit and wireless sensor Specification: Main Unit Display : 4-level grey FSTN LCD 128V x 128H Depth unit : Meters / Feet Operational Range: 590ft or 180Meters Power Input: 3.7V rechargeable lithium battery Voltage: 100~240V Wired Transducer Sonar Operating Frequency: 200kHz Sonar Coverage: 45° beam angle Depth Capability : 328Feet (100M) Built-in Temperature sensor Transducer Cable Length: 6M or 20ft Wireless Sonar Sensor Sonar Operating Frequency: 125kHz Sonar Coverage: 90° beam angle Depth Capability : 2~131 ft (0.6-40M) Operational Wireless Frequency: 433.92MHz Built-in temperature sensor Power Supply: 1 x CR-2032 Lithium battery Language Menu: English (default), Russian Deutsche & Hungarian Approval: CE-Approved Set Includes: 1 x 2-in-1 Fish Finder (main unit) 1 x Transducer Sonar Sensor 1 x Wireless Remote Sonar Sensor 1 x Vehicle Cigar Plug 1 x Neck Strap 1 x Stainless Bolt 1 x Stainless Wing Nut 1 x Charger 1 x Warranty Card 1 x 3V CR2032 Button Cell Battery for Sensor 1 x English Instruction Manual Carrying case