Gold Series DS66 Trigger Aneroids. Gauge and Durable Two-Piece Adult Cuff and Bladder and Nylon Zipper Case. Maintain accurate blood pressure readings with lower lifetime cost with gear-free DuraShock technology, the first major innovation in aneroid technology in nearly 100 years. Part of our Gold Series, the DS66 Trigger features an innovative trigger-release design for easy operation. Shock resistant to maintain accuracy with lower lifetime cost-can withstand up to 30″ drop and remain in calibration. Soft comfort grip. Jewel movement for long life. Laser-engraved dial face for accuracy. Trigger deflation valve for smooth, one-finger operation. 15-year calibration warranty. Lighter weight than traditional models-won´t weigh down your lab coat.Premium aesthetics. Latex-free. Packaging: 1/Each.