Waterproof Wedding Underwater Battery Sub Lights LED 10 Lights~RED~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 underwater. 8 Colors Available. 1" tall and 1 1/4" across