Excellent fish-attracting effect! Highly visible!! LED fishing light This underwater light is much more visible than a chemical light! It flashes about 100 times per minute. The case is crystal-clear, making it highly appealing underwater. It's a small, lightweight 6cm LED fishing light. This listing is for a set of 3 blue lights. Energy-saving with button batteries! Great value! (Uses 3 LR41 batteries.) Of course, the batteries are replaceable. Two sets of batteries are included in the image! LR41 button batteries can also be purchased at home centers. We also have other great fishing items at bargain prices! Thank you for your interest.