Size:3.15 x 3.15 x 1.6 inches, 3.5 oz. It's a compact small battery clock which is powered by 1 AA cabron battery.It's easily to take away as a travel clock.Quieter Clock: The time goes not by ticking, but scanning, so the small bedroom clock will be quieter. Note: not absolutely quiet, for the analog alarm clock is mechanical, not electronic. It's good to put on bedside ,desk or shelf in living room,bedroom, kitchen, bathroom, car.Snooze and Light: The top button is for snooze and light. When alarming, press the black bedside clock you can get 5 minutes nap. And you can get the light when push the button at dark environment which is convenient ro read time at night.Ascending Beep Sounds: The alarming will ring about 30 minutes untill you turn off the alarm.And the volume will gradually increase and become fast, it's useful for heavy sleepers, or who have difficult in getting up.Easy to set, good for kid ,the elder. Help your child learn time management and responsibility with this cute and reliable alarm clock. Perfect for home, school, office or trips – it’s a must-have for every kid’s room!