WA-111 Binary Watch

■ Binary representation time display ■ LED lights indicate the hours and minutes ■ One row of LED shows hours (8-4-2-1); add all numbers-lit to get the right hours ■ Another row of LED shows minutes (32-16-8-4-2-1); add all numbers-lit to get the right minutes ■ Push button, then the time is displayed for 6 seconds