Rechargeable light that turns the bottles into lamps from atmosphere. just put bottle in the neck of the bottle and turn on the led light to get a very unique lamp. shaped like a cork with a bright led, charging via usb. recharges for 1 hour and offers 2.5 hours of light. It can also be used outdoors. There is a switch because bottle light is equipped with sensors that activate the light when it's dark. also suitable for outdoor use and resistant to any weather conditions. produces light up to 5 hours.