HIGHSTAR Blue LED Luminous Message Board Digital Alarm Clock with 4-Port USB Hub / Temperature / Calendar HIGHSTAR Blue LED Luminous Message Board Digital Alarm Clock with 4-Port USB Hub / Temperature / Calendar The USB clock has temperature, calendar and time displaying via lantern slide or switching mode. Leaving a message with fluorescence pen as well as it's convenient to wipe writings clearly with pen. Moreover, clock with 4 USB ports for powr charging or data transmission.