Riester sphygmomanometers for blood pressure measurement offer unmatched precision, durability, and ergonomic designs. Only German engineering and manufacturing could produce these industry best devices. The accuracy of these sphygmomanometers is comparable to that of mercury devices. With a maximum error tolerance of just +/- 2mm Hg, these blood pressure devices exceed international standards. To offer a lifetime of precision their internal components are virtually non-wearing, protected by microfilters, and can withstand pressure loading up to 600mm Hg. Maximum user comfort is ensured with easy to pump bulbs, some models offering a spoon-shaped handle, great for those who use the device multiple times per day. All Riester sphygmomanometers sold in the USA are latex free to prevent allergy complications. Shock-proof models are also available and remain accurate after accidental drops. All models are backed by Riester's 2-year warranty for peace of mind.