Wahl – Trimmer, Nasal, Ear & Nose Rinsable Trimmer Head. 1 Aa Battery Operated. Made In China – Black & Silver 05642-108 The Wahl 5642 nasal trimmer is an easy to use battery operated nose/ear hair trimmer. It has a high-quality stainless steel cutting system with washable blades for secure, hair removal without the pain. The removable blade can be cleaned under running water. Battery operated (1 x AA included) Ideal for travelling all over the world.