NEW - REFURBISHED-

they are in perfect functioning working order- 

The DepthTrax 2BX Boat Mount Depth Sounder with integrated air and water temperature sensors utilizes advanced SONAR technology and sophisticated algorithmic programming to produce accurate depth readings, four times every second, reaching as deep as 600 feet. Its precision extends to temperature measurements as well, providing accuracy to the nearest tenth of a degree. To cater to various boat configurations, INCLUDES A TRANSOM MOUNT TRANSDUCER

Dimensions: 2" Diameter x 1.75" Depth (51 x 45 mm)
Screen Size: Height: 1.65" Width: .87" (42 x 22 mm)
Operating Temperature: 0~160°F (-18~71 °c)
Depth Range: 2.5 ft ~ 600 ft 
Transducer Cable Length: 30 ft (9 m)
Transducer Frequency:  200 kHz
Transducer Beam Angle: 14/Degrees

No Manuals will be included, however they can be downloaded from HawkEye's website for free-