Tap the button after the wake-up alarm sounds, there is also a 5 minute snooze for you before next alarm until the alarm itself is switched off.Great for heavy sleepers. Long press the alarm button to turn off the alarm.The white/green numbers on the clock are very clear. Press the light button allows you to adjust the brightness from low to high brightness, or even turn off the LED light and keep it sound sensitive.You can use the dimmer slider to reduce the brightness to your own personal comfort level, perfect and unintrusive.To power the clock, just plug in the power cord and you are good to go.Big Snooze Button For 5 Minute's Extra Sleep: Tap the SNOOZE button after the wake-up alarm sounds, there is also a 5 minute snooze for you before next alarm until the alarm itself is switched off. Great for heavy sleepers. Long press the alarm button to turn off the alarm. The SNOOZE button is designed BIG for easy searching.Item Name: Digital alarm clockScreen Size: 5 inchesAlarm Volume: 85-90dpColour:Black+greenMaterial:ABSSize:12.8 x 6.6 x 3.5mmPackage Contents:1 * LED alarm clock1 * Mini USB cableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.