Description Jumper JPD-500E has SpO2 measuring, pulse rate measuring, color LED display, low battery indicator, alert function, automatic power-off, portable and lightweight, perfusion index display, brightness control, four-direction display and six display mode, big font display, AAA x 2 batteries, 28.7-gram weight, 62 x 37 x 32 mm dimension. * Get your origianl from from  the fake crowds. * Originated in Germany and manufactured in china. * Save your life with the original device