Black Watch (wristwatch)

The Black Watch is a digital LED watch Sinclair Radionics Ltd. the company.

She has an all-plastic housing with a angeklippsten plastic bottom and a four-digit seven-segment display with red LED digits, which is covered by a blue sight glass. Date and time are displayed, where the keys are hidden below the average for this area and act as a sensor buttons.

The clock came on the market in 1975 and was sold both as kits and as fully assembled clock. The watches electronics consists of the then novel integrated injection logic ( I 2 L ), which was comparatively low power consumption and could be operated with a supply voltage of 1 V from a battery.