Flashing Led Necklace: .With 3 flashing moods by pressing the button switch at the connector,quick flashing,show flashing,lighting up for the lanyard .With 6 moods for pendant by pressing the button switch at the back: 1)RGB flashing quickly 2)RGB flshing slowing 3)RGB light up 4)Red flshing quickly 5)Blue flashing quickly 6)Green flashing quickly .With 11LED lights on the lanyard:4red/4blue/3green and RGB lights in connector anf Pendant(totally 17LEDs) Lanyard Size:12mm*90cm Pendant Size:8-10*8-10cm .Customerized Pendant can be available .Logo imprinting on the lanyards and connector can be availiable