Halloween Gift, Christmas Gift, Led Pin Button: 1. Material: PCB. 2. Size: 3cm- ... blue, green. Halloween Gift, Christmas Gift, Led Pin Button: 1. Material: PCB.3. Size: 3cm-5cm.4. ... using a strong magnet, safety-needle or butterfly button.8. Customized logos and shapes are welcome.9 ... Christmas Gift, Led Pin Button, Light up Pin, Light Button, Led Badge, Pin Badge, Pin Button. Halloween Gift, Christmas ...