Before use
5
Accessories
Please check and identify the supplied accessories.
Maintenance
Clean this unit with a dry and soft cloth.
• Do not use solvents including benzine, thinner, alcohol, kitchen detergent, a chemical wiper, etc. This might cause the
exterior case to be deformed or the coating to come off.
Keeping the battery performance
• During the long period of disuse, full charge this unit once every 6 months to keep the battery performance.
Fold the headphones as shown below. Improper folding may result in a malfunction.
• If the USB charging cord (supplied) is connected, disconnect it from the unit.
Expressions used in this document
• Pages to be referred to are indicated as “
l
±±
”.
• The product illustrations may differ from the actual product.
• Unless otherwise indicated, illustrations in these operating instructions are of RB-HF520B.
Marks denoting model names
Functionality differences between models are indicated with the model marks below.
RB-HF520B:
[RB-HF520B]
RB-HF420B:
[RB-HF420B]
1 x USB charging cord
Folding this unit
