This is a Mountain Dew keychain. It's a rare item, as not much data is available on it. It's believed to be from the original era. It appears to have a magnet inside, as the Mountain Dew inside is floating. The fourth photo shows it floating. As it's believed to be old, there are signs of aging. The adhesive on the top and bottom caps has turned white. Please check the photos. Excluding the metal parts, it's approximately 5.8cm x 2cm. It will be wrapped in bubble wrap and shipped via Yu-Packet Post Mini. Mountain Dew Goods MOUNTAIN DEW Satoko Shibata