Submersible LED Tea Light Great for Party Centerpiece (Red) Height: 1.00 inches, Diameter: 1.18 inches, Burn Time: 36-48 Hours Styles: Battery Submersible LED, with On Off Switch Ready to use: They use 2 x CR2032 Batteries which are included and are already installed. These batteries are replaceable! Reusable: waterproof and wireless and are thus perfect for lighting up vases, bowls, or any water filled containers. LED lights are fun, safe and perfect when you need an alternative for candles in order to meet fire codes or to avoid the dangers of an open flame.