... p10 message bus led display AdvantagesCan used in city bus, car, . . . . . .There have many types, Mono color, Tri-color, Full-color ... to power on/off during the dayBuilt-in real time clock with 12-hour or 24-hour display format8 pre-defined ... recall8 user-defined graph30 pre-graphic symbols such as phone, car, clock, rocket, etc8 pre-defined phrases and animations such as MERRY ...