6Rev.1.0[Precautions for use]• Operating temperature:5 °C - 35 °C {41 °F - 95 °F}When calculating the battery life, note that temperatures below 10 °C {50 °F} shorten thebattery duration.• Do not disassemble the product or touch internal parts.• Battery power is slightly consumed even when the power of this product is OFF. If thebattery is left unused, that may result in liquid leakage. To prevent this, remove the batteryfrom the product when unused for a long time.• Exercise care when using the product in high places. If it falls down, it may cause personalinjury or suffer damage.• Do not use or leave the battery in places where it will be exposed to high temperatures,such as in strong direct sunlight, in a sun-heated car, by the fire, or in front of a stove.• Do not touch the battery poles or contacts inside the battery cover with dirty hands.Otherwise poor contact or noise may result. If dirty, wipe off with a dry soft cloth.The contacts inside the battery cover tend to get dirty. Clean them regularly (about once amonth) with ethyl alcohol. Do not use solvents, such as benzine or thinner, or a metal polish.Otherwise the contacts may become deformed or discolored, or the brass plating may comeoff.• Do not use a deteriorated or short-circuited battery. A battery in this condition may leakfluid, overheat and cause damage.• The product is not made to drip-proof specification. Do not use the product with the wethands in a place where it is directly exposed to water.• Do not swing the product around on the neck strap. To prevent strangling, the closure ofthe strap provided for hanging the product around the neck is designed to give way underpressure. If swung around on the neck strap, the closure will open and the product will flyaway, resulting in personal injury or damage to the product.• The product is designed for indoor use.• Use the product in a location where it is relatively shielded from noise produced by rotatingmachinery, transformers or the ignition system or automobiles.• Do not place the product on top of heatgenerating equipment, such as powered amplifiers,video monitors or measuring instruments, and do not leave it in a closed car in hot summer.When storing the product, do so in a dry place.• The product is high-precision adjusted; exposing it to strong impact or dropping it on thefloor may change its characteristics. Handle the product with due care. Do not expose theproduct to shock or impact as this will cause the audio output of the receiver to give off noiseon impact.Product care• Clean the power source with a dry cloth.• Do not clean with volatile liquids such as benzine and thinner.• When using a chemical cloth for cleaning, observe the cautions provided with that product.Useful hints• Noise preventionTurn off the power of this product, and turn down the volume of a powered amplifier, mixer,etc. before replacing, removing or inserting the battery, as this might produce a large noisefrom these devices.• Volume controlWhen the volume control from this product goes wrong, move closer to the receiver andthen try again to adjust the volume.