1,projector pen, 2,pen with projector function 3,Nice promotion item 4,OEM ... About this product:1,We supply various kinds of logo projector pen2,It can be writing and projector when ... you press on/off switch.3,Pen barrel color available:Red,yellow,orange,blue,jade and ... white, etc.4,Projector logo,ink color,printed logo can be according your request5,4×AG3/LR41 ...