1)Length:30cm
2)Press the button,it flashs fast,press twice,it flashs slowly,Press again,it keep light;
3)There  is a hook on it,you can hang the name card,keychain on it.
4)Make great bright in the evening.is a good gift for party or some other public place.
5)a good promotion gift.can print customer's logo and website on it

the best choice for the promotion gift