SENNHEISER HD 660S2 High-Definition Open-Back Headphones

For more information on how to use this product, refer to the online quick guide:
www.sennheiser-hearing.com/hd660s2-qg.
Important safety instructions
- Read the instruction manual, safety guide, and quick guide (depending on the package contents) carefully and completely before using the product.
- Always include these safety instructions when passing the product on to third parties.
- Do not use an obviously defective product.
Preventing damage to health and accidents
- Protect your hearing from high volume levels. Permanent hearing damage may occur when headphones are used at high volume levels for long periods of time. Headphones of the Sennheiser brand sound exceptionally good at low and medium volume levels.
- The product generates stronger permanent magnetic fields that could cause interference to cardiac pacemakers, implanted defibrillators (ICDs), and other implants. Always maintain a distance of at least 3.94” (10 cm) between the product component containing the magnet and the cardiac pacemaker, implanted defibrillator, or another implant.
- Keep the product, accessories, and packaging parts out of reach of children and pets to prevent accidents. Swallowing and choking hazard.
- Do not use the product in an environment that requires your special attention (e.g. when performing skilled jobs).
Preventing damage to the product and malfunctions
- Always keep the product dry and do not expose it to extreme temperatures (hairdryer, heater, extended exposure to sunlight, etc.) to avoid corrosion or deformation.
- Do not place your headphones on a glass dummy head, chair armrest, or similar objects for long periods as this can widen the headband and reduce the contact pressure of the headphones.
- Use only attachments/accessories/spare parts supplied or recommended by Sonova Consumer Hearing.
- Clean the product only with a soft, dry cloth.
Intended use/Liability
These open, dynamic headphones have been designed for home use with high-quality audio systems.
It is considered improper use when the product is used for any application not named in the corresponding product documentation. Sonova Consumer Hearing GmbH does not accept liability for damage arising from the abuse or misuse of this product and its attachments/accessories. Before putting the product into operation, please observe the respective country-specific regulations.
Manufacturer declarations
Warranty
Sonova Consumer Hearing GmbH gives a warranty of 24 months on this product. For the current warranty conditions, please visit our website at www.sennheiser-hearing.com/warranty or contact your Sonova Consumer Hearing partner.
For AUSTRALIA and NEW ZEALAND ONLY
Sonova Hearing Australia Pty Ltd provides a warranty of 24 months on these products. For the current warranty conditions, visit the Sonova Consumer
Hearing website: www.sennheiser-hearing.com/warranty.
Sonova Consumer Hearing goods come with guarantees that cannot be excluded under Australian and New Zealand Consumer law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
This warranty is in addition to other rights or remedies under the law. Nothing in this warranty excludes, limits, or modifies any remedy available to the consumer which is granted by law.
To make a claim under this contract, raise a case via the Sonova Consumer Hearing website: www.sennheiser-hearing.com/service-support. All expenses of claiming the warranty will be borne by the person making the claim. Sonova Consumer Hearing international warranty is provided by: Sonova Hearing Australia Pty Ltd (ABN 82651492929) The Zenith, Level 14, Tower A, 821 Pacific Highway, Chatswood New South Wales 2067, Australia.
In compliance with the following requirements
EU declaration of conformity
- RoHS Directive (2011/65/EU)
The full text of the EU declaration of conformity is available at the following internet address: www.sennheiser-hearing.com/download.
UK declaration of conformity
- RoHS Regulations (2012)
Notes on disposal
- EU: WEEE Directive (2012/19/EU)
- UK: WEEE Regulations (2013)
The symbol of the crossed-out wheeled bin on the product, the battery/rechargeable battery (if applicable), and/or the packaging indicates that these products must not be disposed of with normal household waste, but must be disposed of separately at the end of their operational lifetime. For packaging disposal, observe the legal regulations on waste segregation applicable in your country. Improper disposal of packaging materials can harm your health and the environment.
The separate collection of waste electrical and electronic equipment, batteries/rechargeable batteries (if applicable), and packaging is used to promote reuse and recycling and to prevent negative effects on your health and the environment, e.g. caused by potentially hazardous substances contained in these products. Recycle electrical and electronic equipment and batteries/rechargeable batteries at the end of their operational lifetime in order to make contained recyclable materials usable and to avoid littering the environment.
If batteries/rechargeable batteries can be removed without damaging them, you are obliged to dispose of them separately (for the safe removal of batteries/rechargeable batteries, see the instruction manual of the product). Handle lithium-containing batteries/rechargeable batteries with special care, as they pose particular risks, such as the risk of fire and/or risk ingestion in the case of coin batteries. Reduce the generation of battery waste as much as possible by using longer-life batteries or rechargeable batteries.
Further information on the recycling of these products can be obtained from your municipal administration, from the municipal collection points, or from your Sonova Consumer Hearing partner. You can also return electrical or electronic equipment to distributors who have a take-back obligation. Herewith you make an important contribution to the protection of the environment and public health.
Learn more about your HD 660S2
High-definition open-back headphones
www.sennheiser-hearing.com/hd660s2-qg.
Online Quick Guide
Sonova Consumer Hearing GmbH
Am Labor 1, 30900 Wedemark, Germany
www.sennheiser-hearing.com.



















