flashing glass, 1) red, blue, green or seven colors available 2)Ag 13 batteries 3) hand wash only 4) great for party flashing glass,1) red, blue, green or seven colors available2)Ag 13 batteries3) hand wash only4) great for party and events and festivals5) OEM or ODM is welcome6) top quality and fast delivery7) reasonable price and good services flash drinking glass