Features: 12/24 hour time format optional, calendar, date and temperature display. 3 levels brightness, automatic/manual adjustment in different time periods. Alarm with snooze function, alarming every 5 minutes. The light is soft and does not hurt eyes, can be used clearly during day and night. Comes with a USB cable for charging and a cell battery to remember times when USB power off. Can be placed on the table and hanging on the wall with a hole on the back.