Product Name: Flashing Beer Mugs
1) Diameter: 10cm
2) Height: 12cm
3) Volume: 17oz. (500ml).
4) Material: PS or acrylic
5) 20'container: 13500pcs
6) 40'container: 27200pcs
7) For changing batteries: pull bottom from the cup gently, unscrews two sliver Phillips-screws off, removes light-board, turns upside down and replaces 3*AG13 batteries by sliding them out with screw-driver, then repeats process in reverse to complete it