HALO Bolt Air Portable Charger Portable Emergency Car Jump Starter and Air Compressor in One: Never be without a charge, a jumpstart or with a flat tire again. At home or on-the-go, the HALO Bolt Air is sure to become your new favorite device. Carry it on road trips to charge your phone, tablet or laptop and use it to jump start your car in case of emergency. Need to quickly inflate a low tire or even just a basketball? Thanks to adjustable pressure settings and a universal nozzle system, HALO Bolt Air can inflate it all! Model Number: HALO Bolt Air.