This is a full pint lager glass in the shape of a modern slim line Pilsner glass. It has four light functions each selected by pressing the on/off button on the base of the glass in sequence a) Strobing Red, Blue Green LEDs alternately light in a very fast clockwise motion giving a strobing effect. b) Flashing all three colours flash on & off at the same time. c) Static all three Leds remain lit continuously and finally d) OFF. Great for any party, BBQ or social event.