Palm Type Aneroid Sphygmomanometer Measure scope: 0-300mmHg Accuracy:±3mmHg Sub-division:2mmHg Aneroid gauge:zinc alloy Cuff material:nylon cuff or cotton cuff. with D-ring(silk screen). Bladder material:PVC or Latex bladder with one tube. Bulb material:PVC or Latex bulb with both valves. Color available: Blue, Grey, Red, Green, Yellow, Black, Brown Carrying bag:nylon bag.