The TSh-4 or, originally translated, TŠ-4 (in Cyrillic: ТШ-4, meaning; Танковый шлем, latinized as Tankovij šlem, anglicized as Tankoviy shlem and meaning; Tanker's helmet), alternatively known either as Танкошлем (Tankošlem/Tankoshlem - same meaning, but shortened), or, most popular, but somewhat inaccurately as Шлемофон (Šlemofon/Shlemophon and loosely translated as Helmet-headset) - since any helmet with built-in radio could be referred to as being such, is once Soviet and today primarily Russian tankman's well-known combat helmet.

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