Feature: 1. Super Wake-up: 0-110 decibel adjustable super loud alarm clock, the alarm clock is also equipped with a red flashing warning light specially designed for heavy sleepers. 2. Duration Adjustable: You can adjust the alarm clock duration to 1-30 minutes, and the snooze time to 1-30 minutes. 3. With Super Vibrator: Equipped with a super vibrator that can wake you up from sleep in seconds. A super vibrator is a bed vibrating device that vibrates when your alarm goes off to make sure you always get up on time. It also has three different modes: vibrate, buzz, or a combination vibrate/hum. You can choose the mode that best suits your needs. 4. Anti-skid Bottom: Anti-skid design at the bottom, and has 2 USB output ports, which can charge two mobile phones at the same time 5. Students Gift: No matter the age of the child, this teen alarm clock is very loud and is the perfect gift for high school students, recent grads, and those college grads who don't want to miss school. Specification: Type: Alarm Clocks Display Type: DIGITAL Motivity Type: Digital Style: Modern Screen Type: LED Model Number: Alarm Clocks Shape: Circular Function: Snooze Function Form: Single Face Power supply: USB charging (with power cord) or 3 x AAA batteries (not included, you need to bring your own) Material: plastic colour: black Package Contents: 1 x Alarm Clock 1 x USB Cable Only the above package content, other products are not included. Note: Light reflection 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.