DuraShock DS58 With gear-free DuraShock™ technology, you can count on the DS58 aneroid to remain in calibration longer than traditional aneroids, providing more accurate readings over time and a lower lifetime cost, helping to improve practice efficiencies and your bottom line. Features: • Gear-free DuraShock™ technology • Certified accuracy to +/- 3 mmHg • Laser-engraved dial face for accuracy • Jeweled movement for long life • Lifetime calibration warranty • Latex-free for safety • Thumbscrew bleed valve and ergonomic inflation bulb • Unsurpassed reliability in a traditional, handheld design • Designed to enhance comfort • Withstands a 60" drop, exceeds AAMI's shock resistant requirement 3 YEARS WARRANTY