Balisong Compatibility list Usage and Battery Swap Instructions Product Description Create your own balisong flipping light show with these Zippy LED caps. These LED caps are custom-made from a shatter-proof polyurethane and house and house a battery-powered LED light. Please note that electronics don't typically play well with being dropped repeatedly; this product is not covered under the Zippy warranty. Features Light-up handle caps that are activated by tapping each cap with the included Zippy fob keychain. Turn the LED lights off by tapping the cap again. LED caps arrive fully assembled with batteries included. The batteries can be replaced with standard CR927 3V batteries. Adds handle bias: A set of two handle caps weighs 0.200 oz. External jimping for extra grip and internal ridges to grip the jimping on your balisongs, so they won't slide off accidentally. One order of LED caps comes with 2 Caps + 1 keychain fob + 1 spare replacement LED unit Disclaimer Some stainless steel balisong trainer blades may be magnetized. If your blade is magnetized, you may find your LED caps turn on/off intermittently. If you are experiencing this issue, I recommend you demagnetize your blade with a standard watch demagnetizer. Balisong flipping is a hobby that often results in drops. The LED lights are a novelty product, and while the LED is cushioned within the rubbery cap, there is always a risk of damaging/desoldering the LED unit while flipping. Consequently, each purchase includes 1x spare LED light, but this product is not covered under warranty under any circumstances. In order to extend the lifespan of your LED caps, I recommend flipping the LED caps over soft surfaces only, such as a bed/couch.