Manual Aneroid Sphygmomanometer/Blood Pressure Monitor Measure scope: 0-300mmHg Accuracy:±3mmHg Sub-division:2mmHg Aneroid gauge:Zinc Alloy Cuff material:nylon cuff or cotton cuff . with D-ring or without D-ring. Bladder material:PVC or Latex bladder with two tube. Bulb material:PVC or Latex bulb with both valves. Color available: Blue, Grey, Red, Green, Yellow, Black, Brown Carrying bag:nylon bag.