The micro SDHC Plus One is used in smartphones and portable gaming devices. With the adapter, Micro SDHC Plus One transforms so it's compatible like an SD card for computer tablets, voice recorders, cameras, and other multimedia devices. The memory connector is dust resistant, extreme temperature resistant, rust resistant, shock resistant, salt & fresh water resistant, alcohol resistant, scratch resistant, airport security resistant, and electromagnetic resistant. The metric ruler is embedded for versatility.