The Ultratec Roadside Assist combines a portable battery jump starter with a built-in air inflator in one unit for the car. If your battery goes flat you can use it to start the engine without needing a second vehicle and jumper leads, and the inflator lets you top up a soft tyre at the roadside or before a long drive. Kept charged in the boot, it is useful for farm vehicles, bakkies and family cars alike. We could not find a detailed specification sheet for this exact model, so check the packaging for the peak current, the engine sizes it supports, the maximum air pressure and the accessories included.