Gear-free DuraShock technology. Certified accuracy to +/- 3 mmHg. Withstands a 30" drop, AAMI's standard shock resistant requirement. Unsurpassed reliability with a unique integrated, cuff-mounted design. Guage rotates 360 ̊ , for easy viewing from any angle. Guage snaps directly into cuff for quick cuff changes. Premium inflation system, and lightweight for patient comfort. Five-year calibration warranty. Latex-free for safety