Functionality confirmed (video output, dial, and buttons 1, 2, and 3 respond only) Air/water supply not tested due to lack of compatible buttons. Water leakage not tested due to lack of a compatible waterproof cap. Liquid present inside the tip (unclear if this is a malfunction) Handle/light source side covering and connector: Scratches 動作確認(映像出力・ダイヤル・1番・2番・3番ボタン反応のみ)OK 対応ボタン在庫なしのため、送気・送水 未実施 専用防水キャップなしのため 漏水未実施 先端内部液体あり(不具合か不明) 持ち手/光源側被覆・コネクター: すりキズ