Duet2 Bluetooth Wire-free Earphones

True wireless, rechargeable Bluetooth earbuds, designed to comfortably fit any ear shape

Available in stores now

Choose your store

Key features

  • Truly wire-free design, no cables; for ultimate freedom
  • Protective charging case with built-in 320 mAh rechargeable battery and USB charge cable
  • Flexible silicon ear shell design, ultra-comfortable and secure fit for hours
  • For music and hands-free calling, with built-in microphone
  • Up to 3 hours playtime without charging
  • Charging case provides 2 full recharges, total portable playback time: up to 9 hours
  • Micro-USB charge cable included
  • 2 extra sizes ear shells included; fits all ears


Height of main product (in mm) 24 mm
Width of main product (in mm) 28 mm
Depth of main product (in mm) 17 mm
Total weight 45 g
Weight of main unit 10 g
Connection type wireless
Bluetooth yes
Wireless range 10 m
Wireless protocols Bluetooth
Bluetooth version 4.1
Cables included Charge cable micro-USB 25cm
Connector type micro-USB
Sound reproduction Stereo
Audio channels 2.0
Driver size 8 mm
Sensitivity -42 dB
Microphone yes
Detachable microphone no
True Wireless Stereo (TWS) yes
Bluetooth profiles A2DP, HFP
Frequency response 20 Hz - 20000 Hz
NFC no
Background noise reduction no
Foldable no
Software no
Special features True wireless (no wires between earpieces)
Noise reduction no
Active Noise Cancelling no
Total harmonic distortion 1 %
Earcup type in-ear
Ear-cap construction closed-back
Output channels 2
Magnet type Ferrite
Sensor type microphone condenser
Pick-up pattern Omnidirectional
Echo cancellation no
Designed for gaming no
Lights no
Waterproof no
Rechargeable battery yes
Max battery life - music 9 hours
Battery composition (Alkaline, Li-ion, etc.) Lithium-ion cell
Power source battery, micro-USB
Suitable for Listening to music, Daily use, Handsfree calling, Business use, Home, Office
Compatible Device Types smartphone, tablet
General compatibility any Bluetooth device with A2DP
Compatible Consoles no
Compatible Software Platforms Android, iOS
Controls on earcap yes
Controls play, pause, next, prev
Remote control on earcap
LED indicators yes

Extra information

General Item number:
EAN code:
1   year
Product weight (net):
45 g
Package contents 2 wire-free earbuds with built-in battery Charging case with built-in battery Micro-USB charge cable 2 extra pairs of ear shells User guide
System requirements Smartphone or tablet with Bluetooth USB charger or powerbank to charge the case




Select type

Select your language
Extended leaflet

Select your language

Frequently Asked Questions

Installation and configuration

How do I install these earphones?

  1. First charge the case via a USB-charger that is connected to the wall power outlet, this will take approx. 1.5 hours. The light on the case will turn blue if the case is fully charged.
  2. Then charge the earpieces in the case, this will take approx. 35 minutes. The light is red when charging. The light will turn blue when the earpieces have been fully charged.
  3. When the earpieces both have been fully charged, start the pairing process by pressing the button for 10 seconds on one of the earpieces. The light will flash blue-red.
  4. Select the Trust Duet2 Earphones in the Bluetooth list of the phone to pair the Duet2 to your phone. 
    Please note that in some phones it can be necessary to switch Bluetooth off/on, or restart the phone before the pairing will be successful.
  5. The Duet2 is successfully paired when the light on the earpiece is blue.
  6. Now link the earpieces together, by pressing the button on the other earpiece for 4 seconds.
  7. The Duet2 is ready for use.

Solving problems

I need new earshells (small, large)?. How do I receive new ones?

If you need new earshells, contact our support team via the contact option on the product page. Include as many details as possible such as purchase date and address details. As the more info you fill in, the quicker the team will be able to process your request and the sooner you’ll hear from our team.

How to reset the earphones?

  • Switch off both earplugs
  • Then switch the earplugs both on again at the same time, and keep the button on both earplugs pressed for approx. 8 seconds until you hear a similar peep from both earplugs
  • Then release the buttons, switch off the earplugs and pair the right earplug with the phone according to the instructions (10 seconds)
  • Switch on the left earplug (4 seconds) so that the ears are paired.

When making phone calls, I hear the audio from one side, is that correct?

Yes, that is correct. The earpiece that was first connected to the phone will receive and handle the phone call.

How does the iPhone handle incoming phone calls when using a Bluetooth headphone or speaker?

As of iOS 11.2, when you are using a Bluetooth headphone and receive a phone call, the button that you use to pick-up the phone call, determines which device is used for the audio.

If you pick-up the phone call with the green button on the iPhone display, then all the audio will be handled by the iPhone microphone and speaker (and not with any connected Bluetooth device).

If you pick-up the phone call with the call pick-up button on the Bluetooth device (headphone or speaker), then all the audio will be handled by the Bluetooth device.

If the person that is calling you cannot hear you – or the other way around – it may be possible that you picked up the phone with one device and are talking via another.

Use the audio icon on the iPhone display during the phone call to change the audio device.

Where is your service center? Or where can I send my product to be repaired?

Unfortunately, we do not have service centers to repair products.
A defective product should be replaced by your point of purchase during the warranty period.

My product is faulty. What do I do?

We offer a 'return to retailer' warranty on our products. In case of a defect, you can return the product to your retailer with failure description, proof of purchase and all accessories. During the warranty period you will receive a replacement product from the retailer if available. For full warranty conditions you can consult: https://www.trust.com/support/warranty


Warranty conditions
  • Trust offers a warranty to the original purchaser from an authorized retailer.
  • Your Trust product is guaranteed under the terms and conditions of this warranty against manufacturing defects for a period of one (1) year* from the date of original purchase, if purchased from an official retailer.
    • *In EU, there is a statutory minimum warranty period of 2 years on every product we sell.
  • In case of defect, return the product to your retailer with failure description, valid proof of purchase and all accessories.
  • During the warranty period you will receive a replacement product from the retailer if available.
  • Warranty will be void in cases of opened products, physical damage, misuse, modification, repair by unauthorised persons, carelessness and using the product for other purpose than its intended use.
  • Exclusions of warranty:
    • Damage caused by accidents or disasters, such as fire, flood, earthquake, war, vandalism or theft.
    • Incompatibility with other hardware/software not defined as minimum system requirements.
    • Accessories such as batteries and fuses.
  • In no event shall the manufacturer be liable for any consequential or incidental damages, including any loss of business profits or any other commercial damages, arising out of the use of its product.


Contact us: Ask a question to the helpdesk


Please check our FAQs first, chances are you'll find the answer there.

Couldn't find the answer in the FAQs? Fill out the form below with as much information as possible and one of our help-desk staff will respond at the earliest opportunity. Our messages are answered in the order they are received.

After submitting the form a confirmation message will be displayed with your reference number. The confirmation will be sent to your email address at the same time as well. If you have not received the confirmation message, please check your spam or junk mail folder. Otherwise, fill out the form again with your correct e-mail address.

Reason for contact




Your profile


Product details


Where to buy

Where to buy

We don't sell our products online ourselves. You can purchase our products via our retailers such as the large online retailers listed below per country. Furthermore you can find our products in many local shops.

Go to our online retailer shops overview