Liroyal Waterproof Wedding Submersible / Underwater Battery Sub Lights LED 20 Lights Green Wedding Tea Light Included FREE 2 extra batteries with each order. Waterproof Wedding Underwater Battery Sub Lights Bright Light for Arrangements. Replaceable Batteries 2 per light-#CR2032 Lasts 12-16 hours. 1" tall and 1 1/4" across A set of 20 tea lights