The Welch Allyn DS66 Trigger Aneroid comes with a choice of adult or large adult cuff. Its smooth trigger-style air release valve and ergonomic design with soft plastic inserts at key touch points ensure comfort and easy operation. With gear-free DuraShock⢠technology, this unit maintains calibration longer than traditional aneroids, offering more accurate readings over time and a lower lifetime cost, benefiting practice efficiencies and your bottom line.