Tube insert fits into the top of your bottle. One click and you set the timer for 6 hours of beautiful delicate lighting from the 15 tiny bulbs on a wire. The tube disappears into the top of the bottle , no ugly cork to show. Uses 1 AA battery. Bulbs are white the yellow look is the bottle. PLEASE NOTE the system will charge shipping on the dollar value. You will be refunded any overage charged after the order is shipped.