User manual SONY MDR-NC33

[. . . ] Before opening the battery lid, check that the claws of the lid are seen. While holding the headphone, twist and pull the earbud off. To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. ZTip To reduce the risk of electrical shock, do not open the cabinet. [. . . ] Twist and push the earbud onto the headphone to where the end of the earbud's colored part aligns with A. Clean the headphones with a soft dry cloth. â· Do not leave the jack plug dirty otherwise the sound may be distorted. â· Be sure to bring the headphones to the Sony dealer when requiring a change of earbuds or repair work. â· Do not leave the headphones in a location subject to direct sunlight, heat or moisture. To clean the earbuds, first remove them from the headphones, and then clean them with water and mild detergent. After cleaning, dry each earbud carefully before use. â· The earbuds will need to be replaced from time to time. If they are worn out by daily use or longtime storage, replace them with new ones. â· If you fell drowsy or sick while using these headphones, stop use immediately. If an earbud accidentally detaches and is left in your ear, it may cause injury. Disposal of waste batteries (applicable in the European Union and other European countries with separate collection systems) This symbol on the battery or on the packaging indicates that the battery provided with this product shall not be treated as household waste. On certain batteries this symbol might be used in combination with a chemical symbol. The chemical symbols for mercury (Hg) or lead (Pb) are added if the battery contains more than 0. By ensuring these batteries are disposed of correctly, you will help prevent potentially negative consequences for the environment and human health which could otherwise be caused by inappropriate waste handling of the battery. the recycling of the materials will help to conserve natural resources. In case of products that for safety, performance or data integrity reasons require a permanent connection with an incorporated battery, this battery should be replaced by qualified service staff only. to ensure that the battery will be treated properly , hand over the product at end-of-life to the applicable collection point for the recycling of electrical and electronic equipment. For all other batteries, please view the section on how to remove the battery from the product safely. hand the battery over to the applicable collection point for the recycling of waste batteries. For more detailed information about recycling of this product or battery, please contact your local Civic Office, your household waste disposal service or the shop where you purchased the product. Replace the battery with a new one when the POWER indicator flashes or lights off. [. . . ] In this case, turn off the power of the headphones. â· Interference noise can occur from nearby cellular phones. Should this occur, locate the headphones further away from the cellular phone(s). In particularly dry air conditions, mild tingling may be felt on your ears. [. . . ]