I have confirmed the character input display using the included application disc (Windows, photo 4). Various display settings are possible. I do not know the status of the built-in battery of the main unit. It is made overseas and the quality is not high. It seems to be attached with a needle pin on the back of the plate. Contents: Main unit, AC adapter, communication cable, disc, manual Shipping: Yu-Packet Post LED electronic name tag flashing name LED electronic bulletin board business card show plate LED electronic bulletin board display tag badge rechargeable scroll message tag Japanese Chinese 4-character symbol display brightness adjustment business restaurant school hotel concert supermarket Main unit size: Approximately 93 x 30 x 6mm