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Using the headphones

HD 250BT |  17

Adjusting the volume

You can adjust the volume for music, voice prompts, beep sounds, 
and phone calls. 

If you are playing music or are on a call: Press the volume 

+

 or 

-

 

button to increase or reduce the volume.

When the maximum or minimum volume is reached, you hear the 
voice prompt “Volume max” or “Volume min”.

Controlling music playback

The following music playback functions are only available when the 
headphones and the device are connected via Bluetooth. Some 
smartphones or music players may not support all functions.

Playing/pausing music

Press the multi-function button 1x.

WARNING

Danger of hearing damage due to high volume levels!

Listening at high volume levels can lead to permanent 
hearing defects. Toggling between the audio sources 
may cause enormous volume jumps that can perma-
nently damage your hearing. 

Before putting the headphones on and before tog-
gling between audio sources, adjust the volume to a 
low level.

Do not continuously expose yourself to high volume 
levels.

You can also adjust the volume using the connected Bluetooth 
device.

Summary of Contents for HD 250BT

Page 1: ...e search function the navigation left or the following links Start Product overview Getting started Using the headphones FAQ If a problem occurs Specifications Sennheiser electronic GmbH Co KG Am Labo...

Page 2: ...cm between the product component containing the magnet and the cardiac pacemaker implanted defibrillator or other implant Keep the product accessories and packaging parts out of reach of children and...

Page 3: ...er hardware revision number firmware version of the product operating system type Android iOS and version ver sion of the app The data will only be used as specified and will not be stored permanently...

Page 4: ...not named in the corresponding product documentation Sennheiser does not accept liability for damage arising from misuse or improper use of this product and its attachments accessories Sennheiser is...

Page 5: ...nheiser Smart Control app for configuring the head phones and for additional functions www sennheiser com smartcontrol HD 250BT on ear headphones USB cable with USB C connector Quick guide Safety guid...

Page 6: ...w Model HD 250BT Headband Ear cups Ear pads Microphone USB C socket for charging Volume button volume down On off button pressing for 3 seconds activates the Bluetooth pairing mode Volume button volum...

Page 7: ...e in Bluetooth pairing mode flashes red 3x are not connected to a device via Bluetooth or the connection has been lost LED Meaning flashes blue Incoming call flashes purple Incoming call flashes red I...

Page 8: ...connected to the device Lost connection are not connected via Bluetooth Pairing are in Bluetooth pairing mode Pairing successful Pairing successfully completed Call rejected Incoming call rejected Cal...

Page 9: ...ol app on your smartphone The Sennheiser Smart Control app allows you to use all functions and settings of the headphones and to e g adjust the sound to your liking using the equalizer 13 3 Connecting...

Page 10: ...ser recommends using the supplied USB cable and a com patible standard USB power supply for charging the headphones Charging the headphones rechargeable battery 1 Connect the USB C connector of the ch...

Page 11: ...ality SBC Paired devices establish the Bluetooth wireless connection immedi ately after switch on and are ready for use On switch on the headphones automatically try to connect to the last connected B...

Page 12: ...y of your Bluetooth device are displayed 5 From the list of found Bluetooth devices select HD 250BT If necessary enter the default pin code 0000 6 During pairing you hear the voice prompt Pairing If p...

Page 13: ...eed to have the free Sennheiser Smart Control app installed on your smartphone Download the app from the App Store or Google Play and install it on your smartphone Alternatively you can use your smart...

Page 14: ...to high volume levels Listening at high volume levels can lead to permanent hearing defects Before putting the headphones on adjust the volume to a low level 17 Do not continuously expose yourself to...

Page 15: ...the head band can be adjusted to properly fit your head Wear the headphones so that the headband runs over the top of your head The markings R for the right side and L for the left side can be found...

Page 16: ...system used The Smart Control app also displays the battery charge status You can retrieve information on the battery charge status on the headphones by pressing the volume button 1x Voice prompt Mea...

Page 17: ...and the device are connected via Bluetooth Some smartphones or music players may not support all functions Playing pausing music Press the multi function button 1x WARNING Danger of hearing damage due...

Page 18: ...or communication apps may not support all functions Making a call Dial the desired number on your smartphone If your smartphone does not automatically transfer the call to the headphones select HD 25...

Page 19: ...button for 2 seconds The microphone is muted You hear the voice prompt Mute on To continue the call and reactivate the microphone Press the volume button for 2 seconds The microphone is reactivated Yo...

Page 20: ...u require the Smart Control app 13 In the Smart Control app select the desired sound effects You can use predefined presets or define your own settings The sound effects are stored in the headphones T...

Page 21: ...the right ear pad to the right ear cup and the left ear pad to the left ear cup 3 Place the new ear pad onto the ear cup Make sure that the seam of the ear pad points downwards 4 Place the ear pad aro...

Page 22: ...attery to your dealer or Sennheiser partner unless requested to do so To find a Sennheiser partner in your country search at www sennheiser com service support Outside the warranty period you can have...

Page 23: ...earch at www sennheiser com Service Support Leaving the Bluetooth transmission range Wireless calling and streaming are only possible in the Bluetooth transmission range of your smartphone The transmi...

Page 24: ...headphones on To do so press and hold the on off button for 4 seconds The LED on the headphones flashes red and blue The head phones are in pairing mode 4 Press and hold the volume button for 3 second...

Page 25: ...ne Power supply built in rechargeable lithium polymer battery 3 7 V 190 mAh USB charging 5 V 120 mA max Charging time of rechargeable battery approx 3 hrs Operating time 25 hrs music playback via SBC...

Page 26: ...lifetime For packaging disposal please observe the legal regulations on waste segregation applicable in your country Further information on the recycling of theses products can be obtained from your...

Page 27: ...f Qualcomm Technologies International Ltd registered in the United States and other countries used with per mission Other product and company names mentioned in the user documen tation may be the trad...

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