E-11
About the Waterproofing/Dustproofing
The DT-X400 Series models are waterproof and dustproof.
Important!
The water- and dust-proofi ng performance of this product is based on CASIO testing 
procedures. Note also that this performance applies to the product at the time of 
shipment (delivery to the customer) and is not guaranteed inclusive of the 
environment in which the product is used. The warranty does not apply to any 
situation where the product is immersed during use, and as with any other electrical 
product, great care should be taken when using this product in the rain or similar 
situation.
• Precautions When Using this Product
— Check that there is no dust, sand or other foreign matter on the battery pack cover, or 
USB port cover, or on the respective contact surfaces. If any soiling is found, wipe it 
off  with a clean, soft, dry cloth. Even very small amounts of soiling trapped on the 
contact surfaces (a single hair or grain of sand, etc.) can cause water to leak into the 
device.
— Check that the waterproof seals on the battery pack cover and USB port cover are free 
from cracks and other damage.
— Close the battery pack cover lock switch fi rmly until the switch is in the locked 
position.
— Avoid opening and closing the battery pack cover or USB port cover in locations near 
water or exposed to sea breezes, and do not open or close them with wet hands.
— Do not drop this product or leave it in locations exposed to temperatures outside the 
specifi ed range. Doing so could impair its water- or dust-proofi ng.
• Other Precautions
— The accessories for this product (battery pack, etc.) and optional products are not 
water- or dust-proof.
— Subjecting this product to a severe impact could render it no longer water- or 
dust-proof.
— If any water leaks into the product as a result of carelessness or inattention during 
product handling, CASIO cannot be held liable for compensation for any damage to 
internal components (battery, recording media, etc.) or for the costs of recorded content 
or the recording thereof.
— CASIO COMPUTER CO., LTD. accepts no other liability whatsoever for any accident 
that occurs due to water leakage.