Anker SoundBuds Slim Wireless Headphones

Owner’s Manual

A3235 SoundBuds Slim User Manual Anker Technology Co., Limited

Safety Instructions
1. Avoid dropping.
2. Do not disassemble.
3. Do not submerge in water.
4. Avoid extreme temperatures.
5. Do not use the device outdoors during a thunderstorm.
6. Use original or certified cables.
7. Do not use any corrosive cleaner/oil to clean.
8. Keep out of reach of children. It contains small parts which may be a choking hazard.

Hearing Safety
1. To avoid hearing damage, do not listen for extended periods at high volume.
2. Do not turn the volume so high that you’re unable to hear your surroundings.
3. Do not use earphones while driving.
4. You should use caution or temporarily discontinue use in potentially hazardous situations.

What’s Included
What’s Included

At a Glance

At a Glance

1. Magnetic heads
2. Volume up button
3. Micro USB charging port
4. Multi-function button
5. Microphone
6. LED indicator
7. Volume down button

Using Your SoundBuds

1. Turn on / off


Flashing blue once

Flashing blue once



Flashing red once
Flashing red once

Note: SoundBuds will automatically turn off after 2 minutes if no device is connected.

2. Charge your SoundBuds
Use the included USB cable to charge your SoundBuds. Make sure they are fully charged before first use.To preserve battery lifespan, fully charge at least once every 45 days.

Charge your SoundBuds

Flashing redFlashing red –> Low battery


Steady redSteady red –> Charging

Steady blue Steady blue –> Fully charged

3. Pair with your device

Pair with your device

Bluetooth Search: SoundBuds Slim

Enter pairing mode Enter pairing mode

Un-pair connected device and re-enter pairing mode Un-pair connected device and re-enter pairing mode

Rapidly flashing blue Rapidly flashing blue Pairing mode.


Steady blue Steady blue Connected to a device

When turned on, SoundBuds will automatically connect to the last connected device if available. If not, SoundBuds will enter pairing mode.

4. Controls

Play - pause

Play / pause

Play --pause


Skip forward

Skip forward

Volume up / down

Volume up -- down

When there is an incoming call while playing music,music automatically pauses to allow you to answer / reject the call. Once the call is ignored or ended, the music resumes.

Answer - End call

Answer / End call

Answer - End call

Reject call

Reject call

Put current call on hold and answer incoming call
Put current call on hold and answer incoming call

Switch between held call and active call
Switch between held call and active call

Transfer a call between headphones and mobile phone
Transfer a call between headphones and mobile phone

Steady blueSteady blue On a call

Flashing blue once Flashing blue Incoming call

Activate Siri

Activate Siri / other voice control software Switch between held call and active call

5. Wear your SoundBuds

Wear your SoundBuds
Wear your SoundBud


5. Specifications
Note: Specifications are subject to change without notice.

Input : 5 V ⎓ 0.1 A
Charging time : 1.5 hours
Play time (varies by volume level and content): 7 hours
Battery capacity : 110 mAh
Waterproof rating : IPX4
Weight : 16 g / 0.56 oz
Impedance : 16 ohm
Driver (full range) : 12 mm
Frequency response : 20 Hz – 20 KHz
Bluetooth version : V4.1
Range : 10 m / 33 ft

6. Notice

This product complies with the radio interference requirements of the European Community.

This product is designed This product is designed and manufactured with high quality materials and components, which can be recycled and reused.

This symbol means This symbol means the product must not be discarded as household waste, and should be delivered to an appropriate collection facility for recycling. Proper disposal and recycling helps protect natural resources, human health and the environment. For more information on disposal and recycling of this product, contact your local municipality, disposal service, or the shop where you bought this product.

7. FCC Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause undesired operation. Warning: Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

10. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

(1) Reorient or relocate the receiving antenna.
(2) Increase the separation between the equipment and receiver.
(3) Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
(4) Consult the dealer or an experienced radio/TV technician for help.

11. RF Warning Statement
The device has been evaluated to meet general RF exposure requirements. The device can be used in portable exposure conditions without restriction.

Questions about your A3235 SoundBuds Slim Headphones ? Post in the comments!
A3235 SoundBuds Slim Headphones Manual [PDF]

Join the Conversation


  1. My soundbuds slim is fully charged.
    The blue light flashes which means it is syncing but turns off when it is done.
    I then try to tun it on and nothing happens. I have retried numerous time to resync and after it finishes the blue light goes off.
    Very frustrated since I have only used them once

  2. Hi,
    My soundbuds will have random “alarm” sounds like a message ringtone when there are no messages nor notifications on my phone/laptop.
    Any way to disable that?

  3. Hello.
    I was offered a headset for Christmas. Super happy with the gift. A first use that went well, a fairly simple connection to my phone. In the evening I want them back on and it goes into pairing mode (fast flashing blue light). I can’t pair them with my phone. I deleted the device from my bluetooth to resume the connection from zero and since then it does not want to turn off remains on the blinking blue light. No detection on my phone. Even after unloading the device the problem persists. What to do

    On m’a offert s’est ecouteur pour pour Noël. Super contente du cadeau. Une première utilisation qui s’est bien passé, une connexion à mon téléphone assez simple. Le soir je souhaite les rallumé et il se mette en mode couplage (voyant bleu clignotant rapide) impossible de les coupler avec mon téléphone. J’ai supprimé l’appareil de mon bluetooth pour reprendre la connexion à zéro et depuis il ne veulent plus s’éteindre reste sur le voyant bleu clignotant. Pas de détection sur mon téléphone. Même après un déchargement de l’appareil le problème persiste. Que faire

  4. My Anker slim+ earbuds (outside of warranty) will not charge. I have tried several different cables and sources, however the red light will not come on when connected to a charging source. Any recommendations are appreciated.

  5. My soundbuds slim, had its Play and volume down buttons come off from the controls handle. Is it safe to paste it back using a chemical gum. (I see small circuits exposed underneath the removed button)
    Or is there replacement for the controls handle?

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