The latex-free Aneroid DS45 from Welch Allyn is compact and lightweight and is integrated into the collar. It is accurate and extra durable thanks to gearless DuraShock technology. The cuff is puncture resistant, even with heavy use. The dial face is laser engraved and the gauge can be rotated 360 ° for optimum visibility. It is easy to rapidly change cuffs as the aneroid is fixed in place with the push of a button. The large pump ball and high-quality air release valve make it easier to inflate. Shock resistance insures the device will remain calibrated after falling for a height of up to about 30 inches.