I was impressed by the compactness and ease of use of this device. This tire inflator comes in a compact black carrying case, 20 x 16 x 7 cm. All accessories fit in the box so you don't lose anything. Pressure hose and cigarette lighter cable are also included. The principle of operation of the inflator is simple: plug it into the car cigarette lighter, set the desired pressure, connect the cartridge to the tire valve and press the on button. Inflation will stop at the selected pressure. Pressure is displayed digitally on a large, bright screen in your choice of three units: kilopascals, bars (kilopascals x 100) and pounds per square inch. The units of measurement and the desired pressure can be set simply by pressing a button. The device works with car tires and bicycle tires. There are also adapters for balls etc. Also in the block there is a light in three modes: constant, flashing, SOS. Please note that the length of the cigarette lighter power cable is only 3.5 meters when the catenary is connected. For large vehicles, this may not be enough.