Sennheiser HDA 280 Closed Dynamic Hearing Test Audiometric Headphones The HDA 280 is a pair of closed, dynamic headphones designed for use with audiometers.Technical DataFrequency response (Headphones)20 - 20000 HzCharacteristic SPL117 dBContact pressure5 N +/- 0,5 NConnection cable3 mTransducer principledynamic, closedWeight330 gNominal impedance37 ?Load rating500 mW (EN 60268-7) Condition: New Return without packaging - Acquired assets in bulk from laboratory & medical equipment distributor READ TERMS BELOW BEFORE PURCHASING _____________________________________________________Purchasing an item from Ontario-Traders on eBay enters you, the buyer, into a legal binding agreement to all terms stated below in their entirety, and confirm and acknowledge having read and understood completely these terms as well as the description of the item. ______________________________________________________? SHIPPING TO BUYERS?? • ?AK, HI, NT, YK, NU and NL must request shipping cost adjustment (if any) prior to making payment as the cost to ship to these locations is more expensive. NOTE for all other continental US and Canadian buyers: the shipping cost for your location is as stated in this listing. • Our shipping times are generally faster than what eBay states above (especially to Canadian addresses). •?We do not sell or ship to Puerto Rico, not directly nor through a freight redirecting/forwarding company located stateside. No vendemos ni enviamos a Puerto Rico, ni directamente ni a través de una empresa de transporte de carga ubicada en los Estados Unidos. RETURNING ITEMS TO SELLER •?Ontario-Traders offers a 30-day return policy on most items (unless otherwise stated in the listing).?? •?Item must be returned to Ontario-Traders in the same condition as it was sold.? •?Damage or wear?caused by buyers use & handling will be reflected in the refund (includes depreciated value from opening/unsealing of a new item). •?Return Postage is the responsibility of the buyer. Original shipping charges are non-refundable. Items sold as Free Shipping have the actual shipping charge come out of the Sale price of the item, this actual shipping cost will be deducted from the refund amount if that item is returned. ? •?Prior to Shipping Back: To prevent brokerage fees and taxes being charged when an item is being returned back into Canada a simple return process must be followed. This requires communications with Ontario-Traders to receive the correct instructions particular to returning that item. All undue charges/fees/taxes levied by customs resulting from not following this process will be deducted from the refund. ? COMMUNICATIONS? Were glad to answer any questions that you have. If at any time you have a concern or issue let us know right away so that it may be resolved. ? ? STATEMENT & DISCLAIMER Ontario-Traders works diligently to ensure that buyers are happy and treated with excellence and thus wish to ensure all policies are clear and understood. Buyers are well served and protected by eBays policies and our genuine desire to do good by our customers. Ontario-Traders makes no claim of expertise and does not guarantee that any item is the correct part for a buyers application. Buyers are responsible for determining that they are obtaining the correct product or part. Buyers must do their due diligence determining this is the correct item prior to purchasing. Ontario-Traders endeavors to the best of their ability to provide accurate information in all listings. By purchasing from Ontario-Traders you affirm: that you understand and agree to the entirety of this statement; that you will not hold Ontario-Traders nor its representatives at fault, responsible for, nor liable in any way. We welcome a dialogue with all of our buyers and want to hear positive as well as constructive input. Thank you for viewing our listing! IR#: B34