Dengeki Hobby Magazine: HGBF 1/144 GAT-X105B Build Strike Gundam Full Package Dengeki Hobby Magazine Clear Blue Ver.

"HGBF 1/144 GAT-X105B Build Strike Gundam Full Package Dengeki Hobby Magazine Clear Blue Ver." 「ビルドストライクガンダム フルパッケージ 電撃ホビーマガジン クリアブルーVer.」. This is a special prize to be handed out to participants who have passed the first selection of the Dengeki "King of Gunpla 2015" 「電撃ガンプラ王2015」 model contest. Price: Not for Sale.

Source: Dengeki.com