SignatureGem LCD 4x5 includes all the high-quality electronic signature capture features of Topaz signature pads with the added feature of a backlit LCD interactive display, allowing users to see ''electronic ink'' under the pen tip as they sign as well as navigate and display text and graphics. The large signing area and rugged tempered glass signing surface make this a versatile pad for the most demanding applications. Part Details: Topaz SignatureGem T-S751 Electronic Signature Capture Pad - Active Pen - 5.30'' x 4'' Active Area - Serial - 410 PPI