One Clock is the only clock you'll ever need. It's like a grandfather clock for your computer.One Clock is a talking clock that sits in your system tray. At your selected time interval, either every 5 minutes, 15 minutes, 30 minutes, or 1 hour, One Clock will play a chime and announce the current time.You have the option to turn both the chime and the spoken voice time announcement on or off. And there are eight chimes that you can choose from.One Clock also features a countdown timer. Use it for anything that requires a countdown timer. Whether it is for cooking, doing laundry, watering the lawn, timing yourself for a test or speech, watching an online auction countdown, or hundreds of other uses.