1) led pflashing ball pen size:115*10mm 

2) Material: pure metal but we also can do plastic material 

3) Hight quality plastic material process full checking when mass production 

4) Logo printing is available, high quality surface process

5) the led flashing ballpoint pen use 3*AG3 batteries included , also can replace when the battery use up

6) The light can be red,blue or white for your selectionInner

7) Color can be any color from Pantone

8)high quality ,high service

9) if you order our led letter fan can fast delivery

10)if you have technique problems need inquiry can call my enginner