Pack of 3 sets LED Moon Lights 20 Micro Starry LEDs on Silver Extra Thin Copper Wire, 2 x CR2032 Batteries Required and Included, 3.5 Ft (2m) for DIY Wedding Centerpiece or Table Decorations (Blue) 4.5 Feet in length, silver wire, blue micro leds Light string is submersible Battery pack not submersible Includes on and off switch 21 Hours of battery life. Small battery pack is easy to hide.Low voltage, For spare batteries, pls search B0136BFTWI