I like this simple tool that I think is a must have for any car owner. The reason is that this tool does not require a battery. A lot of tire pressure tools are digital now, they look great, but honestly I don't want to rely on a tool that can fail the minute I need it. This scenario is probably rare, but I don't want to risk it when I need it most. I hope you found my reason for buying this through Digital helpful. Many Thanks.