Bottle shown in the picture is for display and not a part of actual product.
The wine bottle multicolor lights can create a natural warm and romantic atmosphere, ideal for birthday parties, wedding, barbecue decoration, Festivals decoration - Diwali, Halloween, Christmas, New Year etc. 
Suitable for both indoor or outdoor uses.
Great  choice for decorating gardens, home, bedrooms.
Battery powered : Powered by 3 PCS LR44 batteries (include), the batteries are replaceable, the led bottle light can be reused many times,
Extremely convenient to operate: There is a switch button given on the cork to turn it on or off.
The light inside the bottle is a string light, you can also use it for decoration without the bottle also.