The Nebo Assist Air is a 4-in-1 roadside tool: a 1500-amp peak jump starter, a 120 PSI air compressor, a power bank and a floodlight. It works with 12-volt vehicle and most marine batteries and is rated for petrol engines up to 8 litres and diesel engines up to 4 litres. Spark-proof clamps and a simple 3-step process make jump starting straightforward, and a colour display shows battery level, PSI and warnings. The compressor inflates tyres, bicycle tyres, balls and air mattresses with the included nozzle kit. The 55.5Wh lithium polymer battery fast-charges by USB-C in under 3 hours and can charge phones through USB-C and USB-A. The floodlight has white, red and red SOS modes. In the box: jumper cables, air hose, nozzle kit, 12V car charger, USB cable and storage pouch. Nebo gives a 2-year warranty.