LED Watch Bracelet USB Flash Drives LEDSpecification●Size: 210 x 25 x 15mm●Weight: 36g●Built-in lithium battery and can display the time/ date●Many colors are available: black , blue , green, purple, orange etc●Full capacity : 128MB – 64GB●Fashion Appearance with data storage●OEM / OEM is welcome, logo printing  ,file preloaded ,Partition, Volume label etc are accept●Guarantee: 3 years.How to OperateOption 1: Use button to adjust time1. Press the button for 1 second, the time display will appear, then press the button for 3 seconds, and you can adjust time now.2. Short press per time, the data will be added one related. Press one second to enter in other option.3. Adjust option order, hour----minute---month----dateOption 2: Use computer to adjust time1. Connect the usb onto computer;2. Set up a new text file, and put the current time and then save the file.3. Plug out the use, the watch usb will show the time you put in text time.Attention:  Name the text file as clock, or time ;clock is priority , the others related decreased.Txt content requirement: year/month/day/hour/minute/second. (Such as 2015 07 15 16:21:00)