SKY TRONIC 600W POWER INVERTER ?

SKY TRONIC 600w POWER INVERTER Brand new in box, compete with all leads. Bought as a gift to take camping, but never fitted to the car as we soon down sized and sold the motor. Soft start power inverter DC to AC Reverse polarity, short circuit and overload protection, over temp protection, low battery alarm. 12v - cont pwer 600w, out putting rate 230vac at 50hz Plug Type. Cost 60 new. Comes from a smoke and pet free home, has been stored in the home never in the shed or car, never been used 40 ono