[. . . ] The manufacturer assumes no responsibility for damage caused by failure to observe the instructions, improper use, inappropriate repairs, making unauthorized changes or for using unapproved replacement parts. In the current operating instructions the following warnings are used: WARNING A Warning of this danger level signifies a possible dangerous situation. IMPORTANT A Warning of this danger level signifies possible property damage. [. . . ] Avoid extreme sound levels, especially over long periods of time, when you are using these sports headphones. Acoustical warning and indication signals and environmental noises can sound different when you are wearing these sports headphones. Make yourself aware of how these signals deviate in their sound so that you can recognise the signals in the corresponding situations. Do not use the sports headphones when operating an automobile, bicycle or in any other situation in which environmental sound impaired perception could present a danger to yourself or others. The sports headphones are delivered with the following components as standard: Sports headphones 1 with pre-installed ear cushions (medium size 2) 2 Pair of ear cushions (small 3 and large 4) These operating instructions (not depicted) NOTE Check the contents to make sure everything is there and for visible damage. If the contents are not complete or are damaged due to defective packaging or through transportation contact the service hotline (see chapter "Warranty and service"). Dispose of packaging materials that are no longer needed according to regionally established regulations. When delivered the sports headphones 1 are provided with medium size ear cushions 2. Depending on the size of your ear cup you can use ear cushions (3 or 4) of another size from those supplied. With your fingers carefully pull on the ear cushions 2 to detatch them from the sports 1. Select from the supplied ear cushions (3 or 4) ones that are suitable for your use. Push these directly onto the ear clips 1 until they slip into the recesses on the ear clips 1. Slide the clip of the sports headphones 1 behind your ears and adjust the flexible clip to your ear shape. Many consumer electronic devices are provided with a corresponding headphones socket. In the event that your audio device has been provided with a different connection for headphones you can use, if necessary, a suitable adapter (not supplied). The following table will help with localizing and remedying minor malfunctions: Defect Cause/Remedy The volume control of the playback device is set to minimum volume. 5 mm jackplug is not fully inserted into the playback device's headphones socket. 5 mm jackplug is not fully inserted into the playback device's headphones socket. [. . . ] The warranty is void in the case of abusive and improper handling, use of force and internal tampering not carried out by our authorised service branch. The warranty period is not extended by repairs made under the warranty. Damages and defects extant at the time of purchase must be reported immediately after unpacking, resp. [. . . ]