Dimmable Book Light Table Light Foldable with Calendar Temperature Alarm Clock Atmosphere Colors Changing Led Desk Lamp|Desk Lamps Introduction 1. Advanced lighting technology, no dazzling no stroboscopic, soft lighting good for protect eyes 2. Long lifetime and light failure 3.Touch switch, brightness adjustable, easy to use. 4. Build-in high-capacity lithium battery 5. Charging time about 4Hrs, using time 4Hrs after full charge. 6. Fold design, saving packing size. 7. Aluminum alloy heat sink to protect Led lengthen lifetime 9. It has 4 knids Brightness: Lightest-lighter-dark-off Functions 1.Normal time mode. nomal time mode show: time,date(from 2008-2099),week,temperture,can switch between 12\/24 hour.AM means morning,PM means afternoon.acqulescent time is am12:00,1st Jan 2008. 2.Alarm Clock and snooze mode. Alarm mode can set nomarl alarm time and choose alarm bells music,at the same time can open snooze function. 3.Birthday remind mode. Can set the definite time,date of birthday reminder,will sing birthday song for wish when its time of birthday. 4.Timer mode. Timer mode can set reverse time;timing range:23:59-00:00 Hour, when the time Reach,it will ring. 5.temperature mode. Automatically check the temperature.At the normal state,press SET can swicth \