LED Den-Chemi - 3 pieces LED color: Pink Pink is recommended for those who don't want to be like everyone else! Of course, you can attach it to a float, but it's also very effective to use it in the middle of the line as a fish-attracting light! The brightness may feel a little dimmer compared to red, green, yellow, and orange. (This is just my personal feeling...) If you are not satisfied with the brightness, try using a rechargeable lithium battery. You can buy them on Amazon or Mercari. (Search for CR425 rechargeable) The reason is that commercially available disposable lithium batteries are rated at 3V, but rechargeable lithium batteries are 3.6V, which is a higher voltage, so they are much brighter. You can recharge them repeatedly, so they are cost-effective ^_^ *Batteries are not included with this product. Please prepare commercially available lithium batteries (BR435/2B). Two types of attachment tubes are included so that they can be attached to various floats. (Outer diameter approx. 6mm, inner diameter hole approx. 4mm) (Outer diameter approx. 8mm, inner diameter hole approx. 6mm) Each is 10cm long, so please cut it to your desired length. [Product Description] Easy to attach to commercially available floats Can also be used for homemade electric floats Compatible with commercially available Chemi-tube 50. It can also be attached to Chemi-tube 37, but it will be a little loose, so please adjust with tape. *Attachment tubes are included, so you don't need to prepare them. Please see the photos for examples of how to attach them to floats. You can use them as electric floats by attaching them to commercially available plastic floats for fishing for Japanese Spanish mackerel, squid, horse mackerel sabiki, and cage fishing. They can also be used as fish-attracting lights, horse mackerel fireflies, and squid fireflies in the middle of the rig. They can also be used as tip lights by attaching them to the tip of the rod. How to use: Simply insert a commercially available lithium battery (BR435/2B) to light it up. You can use it repeatedly, so it's very economical! Waterproofed so that it can be used underwater, but Since it is a handmade product, we do not guarantee complete waterproofing, so please understand.