flashing badges ,magnetic flash pin ,flashing led light as the nice promotion gift with hundreds different design available ! 1.Material:PCB+Epoxy resinic glue+hardware 2.Attachment: a.LR926/CR927 battery(work life:24hours at least,and our offer inclde the battery) b.magnet or butterfly-clutch available on the back. 3.Screwing the pin tightly it will flashing in demanded colors light and stoped when unscrewed. 4.color of flash light:Red,Yellow,Green,Blue,Purple,Jade,Pink,White