HammerBombs Floating FlashBomb Light-Up Resin Casting BallThe Floating FlashBomb by HammerBombs focus the LED lights into the water to draw the fish up to your lure. FlashBombs have motion activated Red Green Blue LED lights that stimulate predatory responses in fish. They're activated on the cast and can be re activated by hard jigs on the retreive. Battery life is estimated at 1500 casts and each FlashBomb is guaranteed to work up to 1 month from time of purchase.