... press on/off switch.3)Projector pen barrel color available:Red,yellow,orange,blue,jade and white, etc.4)Projector logo,ink ... battery used6)We can make your own design packaging,polybag,white box,blister card,etc.7)Packing:1pcs/opp polybag,50pcs ... *12.6mmMaterialAluminumBatteryAG3*4(LR41*4)TintMetal tintBody colorred,blue,yellow,white,black,green,purple,silver,Any colorsSample time5-7 daysLead time1000 ...