Maintain accurate blood pressure readings & lower lifetime cost with gear-free DuraShock technology, the first major innovation in aneroid sphygmomanometer technology in nearly 100 years. By eliminating the need for gears Welch Allyn have created a more durable sphygmomanometer without the need for regular re-calibration. 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 Flexiport tubing - 80cm Laser-engraved dial face for accuracy Lighter weight than traditional models - won't weigh down your lab coat Premium aesthetics Certified accuracy to +/- 3mmHg Trigger deflation valve for smooth, one-finger operation Latex free for safety Durable one-piece Lg Adult cuff - 32 - 43cm Durable one-pieceAdult cuff - 25 - 34cm Durable one-piece Sm Adult cuff - 20 - 26cm Durable o