Chrome-plated for case and handle, 65mm diameter dial, nylon calibrated cuff, 2-tube or 1-tube PVC bladder, PVC ribbed bulb SW-AS18A: with 1-tubeSW-AS18B: with 2-tubeChrome-plated for case and handle, 65mm diameter dial, nylon calibrated cuff, 2-tube or 1-tube PVC bladder, PVC ribbed bulb.