TS-9210 Digital Mirror Projection Alarm Clock With Time Display and Projection1. Brightness adjustment: 6 levels. 2. Battery: 2032 button battery (not included). 3. Projection distance: max 5m. 4. Hour Format: 12H 24H. 5. Time Projection & Brightness Dimmer: The projection alarm clock projects time on the wall in a soft red light, which you can clearly see the time but will not disturb your sleep. 6. Dual Alarms & Snooze: This smart alarm clock has dual clocks, which enables you to set two separate wake-up times for you and your partners at the same day, it is a great choice for a 2-person bedroom. The snooze button is located in a convenient central location, you can easily turn off the alarm without opening your eyes to get 5 minutes of sleep time. To prevent oversleeping, the alarm will sound every 5 minutes until it is completely turned off, which is a good choice for heavy sleepers. 7. USB Charging Port & Power-off Memory: The digital alarm clock with 5V1A USB output interface, you can charge smartphones when sleeping. Projection function works only via AC power, But it comes with a battery backup system, the settings of alarm, time and radio will be remembered even during power outages. 8. This alarm clock is an excellent gift for friends, family members and lovers, It is not only a multifunctional alarm clock, but also an excellent decoration for bedroom, living room and study, perfectly match home decoration styles.