The e-mark is a wireless electronic marking device. Using an app on a mobile device, such as a mobile phone or tablet, users can create & change their full color imprints as often as needed. The app features a custom design studio as well as numerous editable templates & stock messages to fulfill all marking needs. Easily upload logos, signature files & so much more! Replacement inkjet cartridge available. Stamp Type: Custom Message; Message(s): Customizable Message; Ink Types: Inkjet Cartridge; Impression Width: Customizable.