4 amber LED tea lights Fully submersible in water Batteries included These bright battery powered amber submersible LED Tea Lights can be placed underwater & will last upto 27-35 hours. It is really easy to turn on: simply remove the plastic tab & screw tight. These tea lights are great for illuminating wedding or party centre pieces. Simply place in the bottom of a vase facing upwards & it will illuminate the entire vase enhancing the water & stems. This product comes supplied with replaceable batteries (2 x CR2032) & measures 2.5cm height x 3cm diameter.