Bresser NV 3x20 Digital Mode D'emploi page 14

Special operating characteristics
The device can be used in day or night, but should not be exposed
to any bright light.
If the device has initially been used in cold conditions and is then
brought into a warmer room, allow it to stand in its case for at least
2-3 hours to avoid any condensation forming on the electro-optical
elements.
Never immerse the device in liquids. Do not expose the device to
either rain or strong sunlight. Avoid exposure to severe shock or
heat sources, which may damage the device.
The following table provides a list of possible problems which may
occur during the operation of the device.
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WARRANTY
The period of warranty is 2 years, beginning on the day of purchase.
Please keep the cash receipt as evidence of purchase. Devices
which become defective during the warranty period can be returned
to the dealer where the device was bought. The repaired device or
a new one will then be returned to you. In the case of defects which
occur after the end of the warranty period, the devices can also be
returned. However, repairs which become necessary after the end
of the warranty period will be subject to a service fee.
Important:
Make sure to return the device carefully packed in the original pa-
ckaging in order to prevent transport damage. Please also enclose
the cash receipt (or a copy). This warranty does not imply any
restriction of your statutory rights.
Your dealer: