While the basic K-26 design was shared by these manufacturers, some of them carried on building watches using movements of the same fundamental design under various names, incorporating further refinements and alterations, such as shockproofing, and automatic day/date indicators. For instance, Petrodvorets used brand names including Lotos, Majak ("Маяк", Lighthouse), Neva ("Нева", the Neva River), Start ("Старт"), Svet ("Свет", Light), and Raketa (Ракета, Rocket), which eventually became the firm's single brand name from 1962. The Chistopol plant produced Chaika ("Чайка", Seagull), Druzhba ("Дружба", Friendship), Jantar ("Янтарь", Amber), Kama ("Кама", River Kama), Kolos ("Колос", Spike), Raduga ("Радуга", Rainbow), Rubin ("Рубин"), Saturn ("Сатурн"), Uran ("Уран"), and Vostok, which became the standard brand for the company.