A: 1.This item is integrating exquisiteness and novelty together,controlling LEDs being flashing by a tiny switch£» 2.It is a magnetic badge that avoiding damage to your clothes and harm to people£» 3.The LEDs are flashing with colorful lights,what's more,it can be made to flash in various styles£» 4.A perfect promotional gifts and decorations for festival,party,bar or disco,and other public places£» 5.OEM is welcome B: This is our patented creation,having the following advantages: 1.Battery needed,only one #1220 battery in the new Vs 2 #927 in the old£» 2.Super thin in thickness of 0.8cm Vs 1.2cm£» 3.Tiny button Vs clumsy screw,not convenient enough to control flashing of LEDs£» Our creative improvement is a great solution for overweight,a reduction for cost,all merits together bring you more benefits¡£