Stimmgabel


	Allegro Electronic


	Baume&Mercier Tronosonic


	Bucherer Tronosonic


	Stimmgabel Schrank


	Bulova Accutron


	Certina Certronic


	Citizen Hisonic


	Eterna Sonic


	Imado Tuning Fork


	IWC Electronic


	Longines Ultronic


	Movado Electronic


	Omega f300


	Rado Electrosonic


	Slava Transistor


	Swissonic 100


	Tissot Tissonic


	Titus Tuning Fork


	Universal Geneve Unisonic


	Zenith XL-Tronic