1.7*21pixel,smd0603,red

2.Pin to hang in the T-shirt

3.With back cover,better frame design

4.English language,digital and some simple images

5.6pcs messages,max 1500 characters

7.9 grades speeds and 9 grades brightness

8.Control by buttons in the back

9.Battery:CR2032

10.Size: 8.72*4.46*0.9cm