led flashing pin 1. LED pin blue light 2.round shape pin 3.CE,ROHS approved pin 4.can print logo on it flashing pin led 1. LED light can be customized as client2.round shape pin 3.CE,ROHS approved pin4.can print logo on it5.with on/off switch6. having 3 flashing modes: fast, slow and long7.factory direct, fast delivery