barigo E7 - Other Button Functions

BARIGO E7/E7S
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2.4 Other button functions
Press the S5 button to switch on the backlit display for approx. 3
seconds. In watch mode keep the S5 button pressed down for
approx. 2 seconds to activate the key lock which locks all five
buttons. The key lock can be removed by pressing the S5 button
again for approx. 2 seconds.
In setting mode, which is activated by pressing and holding the S4
button for approx. 2 seconds, scroll through the menu up with the S1
button and downwards with the S3 button. Confirm your selection
with the S2 button.
The BARIGO E7/E7S automatically quits setting mode if there are
no button presses within a minute.