Expressions used in this document
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The product illustrations may differ from the actual product.
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Unless otherwise indicated, illustrations in these Owner’s Manual are of RZ-B310W.
Accessories
1 x USB charging cord
(Input plug: USB Type-A Shape, Output plug: USB Type-C Shape)
1 x Earpieces set (2 each of sizes S, M, and L) (M size fitted to the earphones)
Only for U.S.A.
To order accessories, refer to “Limited Warranty”.
(Important) About water resistance
Specifications for this unit are equivalent of IPX4 of IEC 60529, the protection level of electronic
device enclosures that protects from splashes, and is not designed to be totally waterproof.
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About IPX4 (liquid ingress protection level against splashing water)
This unit is compatible to operate after splashing from nozzles approximately 2.6 L/min (0.7 gal/
min) of room temperature tap water from every direction approximately 20 cm (8 in) from this unit
for 10 minutes.
The charging cradle and the USB charging cord (supplied) are not water resistant.
Water resistance is not guaranteed under all conditions.
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Cautions for use in places where the unit may get wet (from spray, rain, etc.)
Observe the following precautions. Incorrect operation cause malfunction.
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Do not charge the charging cradle or the earphones while your hands are wet or while there
are still water droplets on this unit (earphones or charging cradle).
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Do not use the USB charging cord.
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Do not apply soapy water or detergent or immerse in water.
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If water drops get onto the unit in cold climates, wipe off with a soft, dry cloth.
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If water gets onto the earphones or microphone, wipe off with a soft, dry cloth.
– Sound may get smaller or get distorted.
– If there are water drops left in the earpieces, you may hear the sound at reduced volume or
you may not be able to hear anything at all. If this is the case, remove the earpieces and
get rid of the water drops.
If water does get into the earphones or the charging cradle, cease use and consult your dealer.
Malfunction due to improper handling by you will not be covered by the warranty.
Charging
The chargeable battery (installed in the unit) is not charged initially. Charge the battery before
using the unit.
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Before use
