Just imagine if you had a digital watch today. What a conversation starter. You would be the envy of the office.
And when girls like Madeline Smith noticed your ultra-modern Pulsar time computer and tried to snog you, then you would be able to act bored and casually press your button behind her back like Roger Moore in You Only Live Twice.
It is one of the immortal moments in cinema history where the stars are upstaged by an LED display.