U-Treasure began selling the Pocket Monsters Captain Pikachu Lightning Bolt Silver Necklace (ポケットモンスターキャプテンピカチュウ　いなずまネックレス　シルバー) on December 24th, 2024 at 11:00 JST for 16,500 yen (including tax). The new "Captain Pikachu ver." lightning necklace has a surface texture reminiscent of electricity and the back is engraved with Captain Pikachu. The necklace is shaped like a lightning bolt and is comprised of Silver 925 with a Yellow Gold outer layer. A 18k Yellow Gold version is also available for 132,000 yen.

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Sources: https://u-treasure.jp/product/PO0200405200 and https://u-treasure.jp/product/PO0200402200