With its smooth, pear-shaped design and large, black, easy to see numbers against its white face, this is a great clock for the blind or visually impaired. It has an analog readout, voice time report and an alarm and hourly time announcement. You can also push the large, easily accessible button on the top of the clock to hear the time. 5 x 4 x 2.3 inches. Requires 2 AA batteries, not included.