Promoting with a purpose is easy with the Square Color LED Calendar Pen Holder. It can be used as holding pens, watching time and equipped with features like normal time mode display time, date, week, temperature, and 12/24 conversion, daily alarm clock sleep patterns, birthday reminder mode, reverse time timer mode, automatically detects environment temperature, metal net, LED color light making it a hot item with your targeted prospects and clients. This will save you time and resources compared to other marketing methods.