In 1970, ESA starts to secretly develop a chronograph mechanism for the ESA 9162. It finally appeared in May 1972 and is known as the ESA 9210. Production is limited to 21,000 units. Certina, Longines and others also used this movement in their watches.

Below is a selection of photographs of stainless steel and gold plated cased Omega F300 Hz Speedsonics; some have lumed hour markers while others have raised batons. All utilizes the ESA 9210 movement.

Omega Speedsonic F300 Hz Chrono; Steel case and lume hour markers; ESA 9210; 1972	Omega Speedsonic F300 Hz Chrono; Steel case and lume hour markers; ESA 9210; 1972	Omega Speedsonic F300 Hz Chrono; Steel case and lume hour markers; ESA 9210; 1972	Omega Speedsonic F300 Hz Chrono; Steel and gold plated cases and lume hour markers; ESA 9210; 1972	Omega Speedsonic F300 Hz Chrono; Steel and gold plated cases and lume hour markers; ESA 9210; 1972	Omega Speedsonic F300 Hz Chrono; Steel and gold plated cases and lume hour markers; ESA 9210; 1972
Omega Speedsonic F300 Hz Chrono; Steel and gold plated cases and lume hour markers; ESA 9210; 1972	Omega Speedsonic F300 Hz Chrono; Steel and gold plated cases and lume hour markers; ESA 9210; 1972	Omega Speedsonic F300 Hz Chrono; Steel and gold plated cases and lume hour markers; ESA 9210; 1972	Omega Speedsonic F300 Hz Chrono; Steel and gold plated cases and lume hour markers; ESA 9210; 1972	Omega Speedsonic F300 Hz Chrono; Steel and gold plated cases and lume hour markers; ESA 9210; 1972	Omega Speedsonic F300 Hz Chrono; Top Half: Steel and gold plated cases and lume hour markers; Bottom Half: Two steel cases, one with lume hour markers and the other with raised batons; ESA 9210; 1972
Omega Speedsonic F300 Hz Chrono; Both with steel cases, one with lume hour markers, the other with raised batons; ESA 9210; 1972	Omega Speedsonic F300 Hz Chrono; Both with steel cases, one with lume hour markers, the other with raised batons; ESA 9210; 1972	Omega Speedsonic F300 Hz Chrono; Both with steel cases, one with lume hour markers, the other with raised batons; ESA 9210; 1972	Omega Speedsonic F300 Hz Chrono; Both with steel cases, one with lume hour markers, the other with raised batons; ESA 9210; 1972	Omega Speedsonic F300 Hz Chrono; Both with steel cases, one with lume hour markers, the other with raised batons; ESA 9210; 1972