A typical Riester quality product. In metal with aluminium housing and single tube-plug-in connection. - Calibrated nylon cuff with velcro. - Latex bulb for pumping up the cuff - Metal valve base - Ergonomic spoon-shaped grip of stainless steel - Single-tube connection - Precision air release valve with fine adjustment and wear-free - Microfilter protects air release valve and measuring system - Specially tempered copper-beryllium diaphragm, with precision movement and almost non-aging - Diaphragm pressure-loading capacity up to 600 mm Hg