ReSound LX400-M, User Manual

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 care and maintenance

Proper handling

Your hearing instrument is protected by a layer of protective, hydrophobic nanocoat material. However, please 
follow these instructions to further prolong the durability of your hearing instruments. 
1.  Keep your hearing instrument clean and dry. Wipe the case with a soft cloth or tissue after use to re-

move grease or moisture. Do not use water or solvents, as these can damage the hearing instrument(s). 

2.  Never immerse hearing instruments in water or other liquids, as liquids may cause permanent damage 

to the hearing instruments.

3.  Avoid rough handling of hearing instruments or dropping them on hard surfaces or floors.
4.  Do not leave hearing instruments in or near direct heat or sunlight, such as in a hot, parked car, as 

excessive heat can cause damage or deform the casing.

5.  Hair spray, make-up, etc. may damage hearing instruments. Remove the instruments prior to the ap-

plication of cosmetics.

6.  Never force the battery door closed, as this may damage the hearing instrument.
7.  Do not leave hearing instruments in the sun, near an open fire, or in a hot, parked car.
8.  Do not wear hearing instruments while showering, swimming, in heavy rain, or in a moist  

atmosphere such as a steam bath or sauna.

9.  If your instrument does get wet, or if it has been exposed to high humidity or perspiration, it should be 

left to dry out overnight with the battery out and the battery compartment open.

10.  It is also a good idea to put the instrument and battery in a sealed container together with a drying 

agent (desiccator) overnight. Do not use the instrument until it is completely dry. Consult your hearing 
care professional as to which drying agent to use.

11.  Remove the hearing instruments when applying items such as cosmetics, perfume, after-shave, hair 

spray, and suntan lotion.