Keychain of two side LED One for light, another for money detector. Size: 60X18MM customer's logo welcome Keychain of two side LEDOne for light, another for money detector.Size: 60X18MMKeychain, Good for promotion at competitive price.using 6pcs of AG3button battery.Packing: 100pcs per opp bag, 1,200pcs per carton. MOQ: 24000pcs