This Sentryman Mini Black resin ballpoint pen (Length: 4.75”) is engineered in brass coated in a black resin, for a smooth masculine finish. It features a bombe clip and AD hallmark logo on the cap top. 這款 Sentryman 迷你黑色樹脂原子筆（長度：4.75 吋）採用黃銅材質，外覆黑色樹脂，呈現光滑的男士質感。筆夾為弧形設計，筆蓋上方飾有 AD 標誌。
