Description: Furuno Satellite Compass SC50 4.5 Inch Monochrome LCD Display, Satellite Compass with Three GPS Antenna Receivers Display Size 4.5 inches Display Type Mono LCD Power Usage 12 VDC or 24 VDC Receiver Type 26 inch Dome reconditioned unit: tested & found in good working condition. we have all spares available. Save money & planet Earth: buy reconditioned Furuno spares from our stock.