Waterproof Wedding UnderwaterBattery Sub Lights~WHITE~Wedding~Special buy 10 includes Free 2 extra Battery Included FREE 2 extra batteries with each order. Great for wedding arrangements, just place in bottom of see through glass. Special Buy 10 get Free Extra Batteries---uses Replaceable Batteries 2 per-#CR2032 Waterproof Wedding Underwater Battery Sub Lights Bright Light for Arrangements. Lasts 12-16 hours. 8 Colors Available. 1" tall and 1 1/4" across