Creative Protection Clear Lamp Bulb Keychain

This Bulb Key-chain only use three fastener batteries, a LED. you will see a blue precious stone in night.  Parameter:  Type:WK-001  Three fastener batteries.  Can light 3-4 hours standing  Condition : 100% Brand New  Dimension: OVERALL SIZE: 9 cm, Bulb SIZE: 5.5 cm x 3 cm.  Function:  In night, it will falsh mysterious, just a very cool gift.  Use Method:  Press the key.  Look at this key chain,it must be take your attention.This bulb key-chain only use three batteries and a LED.In the night,it'll flash 7 colors light,if you press the top of bulb.