... Supply event&party deceration plastic flashing beer mugBeer and Cola Mug with LED Light Flashing 350ML 1. Flashing in 6 ... on the bottom of beer mug3. Flashes when the mug is taken up, and the light will be off ... Volume: 500ml 5. Logo printing available . Take up the mug, press the switch once at the bottom of the ... mug. .Then turn on the light; press it again ,close ...