Alarm clock is enabled with an extra loud ringing sound which makes it perfect for heavy sleepers and with a dinosaur design making it very attractive and fun for kids and it will be a beautiful item for decoration for bedrooms and play rooms Kids alarm clocks requires a AA battery for power. Easy to operate: there are 3 levers on the back of the clock , one to set the time, one to set the alarm and one to switch off the alarm Please not that there is no snooze button so after alarm is switched off it must be switched on after 1 hour or bedtime as it has a 1 hour continues alarm ring function for deep sleepers before it automatically switches off