Smaller hand profile; easier to handle; matte finish for a better grip. Comes with (Two feet of tubing and a male coupler, and the pump unit of course). On/Off button for accurate pressure readings. Auto shut off feature (once fully depressurized the unit will shut off after 5 seconds). Battery operated (requires 4 AAA batteries). LED display uses MBARS (Millibars) for gauging pressure. (Up to 355MBARS which equals about 10.5 in. Hg’s) Our Deluxe Pump measures in “in. Hg” (Inch of Mercury)