Reusable Floating Candles Lamp Light on Color Water and Oil Long Lasting for All Occasions, 5 buoys, 50 wicks No battery used, Long lasting, fun and easy to use. You can make any color and add any scent you want. Shape is flexible. You can make any shape you need. One set consist of 5 buoys, 50 wicks and one bottle of concentrate color (random color or select from red, blue, green). Use regular cooking or salad oil on top of color water, very easy to use.