Tycos Wall Aneroids with Durable Two-Piece Adult Cuff and Bladder- Great Looks and clinical grade accuracy. Certified accuracy to +- 3 mmHg, Mercury-free and latex-free for safety, Ruby-jeweled movement for long life, Laser-engraved dial face for accuracy, Large, easy to read dial face (6.25"/15cm), Built in cuff storage basket, Mobile stand has adjustable height and 360 degree swivel for clear viewing, Lifetime calibration warranty. Packaging: 1/Each.