Nauticam Extension Ring 70 with Focus Knob, Инструкция по эксплуатации

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Please follow the instructions below to mount the Extension Ring on a port.
1. Confirm that the extension ring is unlocked,
Press the RED bar to unlock the locking device of
the extension ring.
2. Align the "I" mark on the extension ring with
the WHITE dot on the port.
3. Gently push the extension ring towards the
port until it cannot go any further.
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