1970's Jaeger Lecoultre Memovox Speed Beat

Jaeger LeCoultre Ref. E 873 "Memovox Automatic," Made in the 1970's. Fine, center seconds, self-winding, oval, stainless steel wristwatch. With date, alarm and two crowns, one for setting the watch function, one for setting the alarm function. The high-frequency Cal. 916 automatic movement beats 28,800 times per hour.
Less than 1,000 examples were produced.
Complete with original steel Jaeger LeCoultre watch band, total; length 18,2 mm