Sony NYSNO-10 Help Manual page 12

The battery may be quickly depleted.
After a few recharges, the battery life will improve.
It may take longer to charge the battery.
The (Power) lamp (red) may not light up immediately.
Wait for a while until the
If the life of the built-in rechargeable battery drops significantly, the battery should be replaced. Visit the Company support site:
https://www.sony.net/Products/NYSNO/support/
Avoid exposure to temperature extremes, direct sunlight, moisture, sand, dust or mechanical shock. Never leave the main unit in
a car parked in the sun.
If connecting to the computer for charging, remember to follow the precautions below.
If the computer enters into hibernation mode, charging will not be completed properly. Check the setting of the computer before
charging.
The (Power) lamp (red) will go off automatically if the computer enters into hibernation mode. Charge the main unit again in
this case.
Use the supplied micro-USB cable only, and connect directly to a computer. Charging will not be completed properly by an
indirect connection, such as via a USB hub.
(Power) lamp (red) lights up.
4-596-222-11(1) Copyright 2017 Sony Corporation
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