-Adjustable inflating pressure; automatically inflating or deflating; acousto-optic prompt after inflation；safe and accurate; easy to use.
- Special mode for inflating tires of 0 pressure.
- Inflated tires management function.
- Fast and little noise inflation and deflation by using special sound reduced mass flow valve.
- Multi-users management system can save all set information to keep users from repetition, fast and convenient.
- Controlled by special chip, which is reliable, multifunctional and accurate.
- High light LED （HWP-108）/ LCD backlight（HWP-108H）Clear and easy to read.