The Hymer B range has been on the market since 1981 and it would be fair to call this a classic model. Today the B range has a width of : 235 cm and height of 290cm offering sleeping for four, a 70 cm wide entrance door, all-round protection thanks to GRP roof coating and styrofoam insulation, AL-KO lightweight frame with independent wheel suspension, 150 litre fresh water tanks and 130 litre grey water tank and a smart tower 142 litre 'fridge.
The 678 has a GVW of 4,500kg offering a payload of one tonne. The vehicle is 745cm long. This version has joinable twin beds at the back.