Manual: Designed for smaller balls such as basketballs, volleyballs, etc. Requires no electricity or batteries but takes more time to inflate, making them great for casual use. 

Electric: Designed for fast inflation of smaller balls such as basketballs, volleyballs, etc. Most models require electricity but will provide a quicker inflation time and come in a variety of models to suit your usage needs. For ultimate portability, a battery-powered inflator is also available.

Air Compressor: Designed for inflation of almost anything and ultimate portability for on-the-go inflation. 

Large-Ball Inflator: Specifically designed to quickly inflate large balls and cage balls. A more powerful engine will deliver a faster inflation time.