Gear-free DuraShock design is much more durable than traditional aneroids with gears allowing you to maintain accurate blood pressure readings with lower lifetime cost * Provides unsurpassed reliability in a traditional handheld design * Super shock-resistant - can withstand up to 60 drop (twice the AAMI Shock Resistant standard) and remain in calibration * Jeweled movement for long life * Laser-engraved dial face for accuracy * Premium inflation system for comfort * Lifetime calibration warranty * Latex-free *