Time Setting Press and hold the "MODE" button for 3 seconds to enter setup mode-Use the UP or DOWN buttons to adjust the number of hours- Press the MODE button again to set the minute by using the UP or DOWN button- Press the MODE button again to exit the setup mode. Night Mode Press MODE twice, then press UP or DOWN bottom to turn on/off the night mode The default night mode is between 18:00 and 6:00 Alarm Setting Step1.Press the "MODE" key. Once the AL icon starts to blink, alarm setting can be started. Step2.Press and hold the MODE button for 3 seconds-Then use the UP or DOWN bottom to set the desired value in the order of hours, minutes, and snooze interval (Press MODE to switch from one parameter setting process to the next one). Snooze intervals can be adjusted from 5 to 60 minutes (the default interval is 5 minutes). Step3.Press MODE again to exit the setup mode. Step4.Press DOWN to ensure that the AL lamp is at the long bright stage, and the alarm set up is finished.(Note: if the AL lamp is not at the long bright stage, the alarm set up is not successful.) Specification: Function: Time Display/Alarm/Snooze Time Display: 12 or 24 hour format selectable Brightness: 3 Steps Dimmer Control (High, Medium, Low) Snooze: 5 - 60 minutes (The default interval time is 5 minutes) Powered by: USB (1 meter USB cord included) Settings Back Up : 1 Pcs CR2025 battery (included) Product Size: 21.5 cm x 8.8 cm x 3.7 cm (8.4" x 3.3" x 1.4") Material: Plastic Package Includes: 1 x Digital Alarm Clock 1 X USB cable 1 x Manual 【Alarm and snooze function】It has wake up function and snooze function.The snooze function allow you catch a little extra shuteye. Snooze Alarm gives you few minutes wake up delay. Freely in 5-60 minutes settings. 【SIMPLE AND CONCISE DESIGN】Easy to install and convenient to use, comes with wall mount holes and stand for you to use with ease. Contemporary design, fits well in any modern or contemporary environments, especially for places like sitting room, garage, kitchen room and corporate offices. 【Alarm and snooze function】It has wake up function and snooze function.The snooze function allow you catch a little extra shuteye. Snooze Alarm gives you few minutes wake up delay. Freely in 5-60 minutes settings. 【SIMPLE AND CONCISE DESIGN】Easy to install and convenient to use, comes with wall mount holes and stand for you to use with ease. Contemporary design, fits well in any modern or contemporary environments, especially for places like sitting room, garage, kitchen room and corporate offices. 【3 ADJUSTABLE BRIGHTNESS LEVELS】High brightness with 3 Steps Dimmer Control (High, Medium, Low) . You can read the time day or night from a wide angle,The clock will dim about 20% automatically during 6:00p.m--- 6:00a.m. With LED light-absorbing technology, the light is more saturated, not to hurt the eyes, and environmental protection. 【USB POWERED】Powered by USB and lithium cell battery for power outage backup.Universal White USB Cable with 1m cord length. USB cord can be used with AC adapter (AC adapter not Included) Lithium Cell Battery (included) will help the clock back-up all settings automatically when USB power off. But time function will not stop, just you can not see numbers on screen and alarm function will not work 【3 ADJUSTABLE BRIGHTNESS LEVELS】High brightness with 3 Steps Dimmer Control (High, Medium, Low) . You can read the time day or night from a wide angle,The clock will dim about 20% automatically during 6:00p.m--- 6:00a.m. With LED light-absorbing technology, the light is more saturated, not to hurt the eyes, and environmental protection.