Justin Case 12 V Digital Inflator, Pressure Gauge Digital Tire Pump - Black

[This review was collected as part of a promotion.] The justincase inflator has lots of features, all part of a compact carrying case. Of note: it can only be charged with its 12 volt adapter. It does not use an AC adapter. This was mainly designed to carry in your vehicle. It's there any time you need to put air in your tires. I find this enormously helpful, especially in winter months. I have been unable to find working air pumps at gas stations in the winter time. Typically, my tires need more air when the seasons change. I don't like having to pay for air either. Bonus: this has more uses than putting air in tires. It contains adapters and so you can fill bike tires mattresses rafts and toys. Perfect for gifts, toys, etc., that need to be inflated. The carrying case has compartments to hold all these adapters, including a small hose. It's easy to operate, you just set the PSI that you want and it stops inflating at that setting.