Portable Analog Desk Clock with Pen Holder with Alarm Clock - Black. Durable Plastic DESIGN : Attractive modern design desktop clock with analog readout. HOLDS one pen when closed, two pens when opened. ALARM : Chirping alarm clock with manual on/off switch. SIZE : Measures 5"W x 2.5"H x 7/8"D closed, 7"W opened. BATTERY : Operates on "SR626" watch battery (included but may require new battery).