FeaturesElectrocardiogram/EKG Rhythms Pocket Card: Horizontal and Vertical Option, Nursing, Badge Pocket Card. Packed with essential rhythms, this double-sided card offers unparalleled convenienceMaterials: The ekg badge card crafted from waterproof plastic and boasting the thickness of just half a credit card, it's light enough to effortlessly attach to your badge reelThese double sided EKG rhythms interpretation cards can support learning rhythms but also serve as a quick reference guide in a demanding work situationVersatile Design: The EKG badge card set includes both horizontal and vertical features to suit your preference. Content is descriptive, simplified, and neatly designed for quick referenceThoughtful Present: EKG Caliper Measuring Tool for Nursing; These cards mean that learning pace will be easier and you can better cope with questionNotice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementDescription:Size: 9.8x5.8cmWeight: 10-20g