1.Screwing the pin tighttly makes it flash in different colors,unscrew it turns off 2.red,yellow,orange,blue,jade and white LED color is available 3.attaches to clothing with strong magnet,hair clips are also available 4.strap is available as for necklace 5.inner packing: 1pc/blister card,100pcs/inner box outer packing: 1000pcs/carton T/T in advance or L/C at sight