Retro Magic Rail Twirler Flashing Magnetic Gyro Wheel with Rotating Lighting Effect Vintage Fidget Toy Magnetic Gravity Defying Stunt Toy for Adults, Boys, Girls With instructions (including info about how to replace batteries) works great without batteries (human person propelled) Light flashes are the ONLY reason to replace the batteries (batteries are old). BATTERIES CAN BE REPLACED (INSTRUCTIONS TO DO SO) 1990s, strong metal, durable, good condition, lights may not work 10 ½” long, 3 complete sets, with storage container B002….weight 1lb 0 oz LOVE TO BUNDLE with other items SMOKE FREE Pet Free Environment