Waterproof Wedding Underwater Battery Submersible Lights LED 12 Lights~BLUE~Wedding~Tea Light Included FREE 2 extra batteries with each order. Waterproof Wedding Underwater Battery Sub Lights Bright Light for Arrangements. Batteries included they are Replaceable Batteries 2 per light-#CR2032 Lasts 12-16 hours. Yes there is 12 per box. 1" tall and 1 1/4" across