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| 1 | 1961 | Lockheed USA manufactures a prototype watch with a hand which indicates the number of heartbeats (pulses). The heartbeat was measured at the wrist by electrodes and then amplified. |
| 2 | 1977 | The Pulsar-Pulse Time computer by Hamilton HMW is sold. When the sensor below the display was touched by a fingertip for a short time, a miniature light transmitter and a photo-transistor were able to detect the changes in the reflected light and would register the number of heartbeats per minute. Only a very few pieces made out of 14 K gold were produced. |
| 3 | 1980 | The 'Chromocardiometer' of Gyropan Diffusion S.A. Switzerland is produced. A LCD screen shows the pulse rate and a second screen indicates both the time and the time of the chronograph. |
| 4 | 1981 | In December, the Seiko 'Runner' becomes the world's first successful pulse-meter and is sold in huge quantities (cal. S 229). If a finger is applied to the built-in sensor, the pulse rate is displayed. The module was sold in various cases. |
| 5 | 1983 | The Pulsemeter 'SAB001' or S234 of Seiko containes a sensor. Attached with a string around the chest the heartbeat can be measured while engaged in sports. The watch was issued in a red and a black coloured version. |
| 6 | 1983 | The German watch manufacturer MBO Munchen manufactures the watch 'Pulse Check' (cal. 7383). |
| 7 | 1983 | Timeco Manufacturing Co. Ltd Hong Kong presents the 'Pulse Touch'. |
| 8 | 1984 | The Citizen 'Bio-Sports' or 'Jog Point' (cal. D 010) with a pulse sensor is released. |
| 9 | 1987 | The first 'Pulsecheck' produced by Casio: the 'JP 100W' enters the market in January. |
Copyright © by Pieter Doensen
email: doensen@xs4all.nl
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