This is a pack of 48 pink Submersible Waterproof Underwater Lights. Each light includes the batteries. Twist the light for easy on/off. Batteries are easily replaceable (standard CR2032 batteries.) Use the lights anywhere you want to add color - weddings, fish tanks, pool, birthday parties or just daily use in your home. BlueDot Trading is a registered trademark. BlueDot Trading LLC and Amazon.com are the only authorized sellers of BlueDot Trading branded products.