# Headset EPOS ADAPT 135T USB-C II

**URL:** https://aio.lv/en/product--sennheiser-1000904--9818234
**Data updated:** 2026-07-16 18:59 (EEST)
**Category:** Headphones
**Manufacturer:** Sennheiser
**Manufacturer code:** 1000904
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 29.49 €
**Prices and availability valid until:** 2026-08-16 23:59
**Price without VAT (21%):** 24.37 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sennheiser-1000904--9818234

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.08.2026 | free |
| Pickup points | 06.08.2026 | 1.79 EUR |
| Courier delivery to door | 06.08.2026 | 4.99 EUR |

## Summary description

The EPOS ADAPT 135T USB-C II is a wired headset designed for office and call center use. It features a frequency range of 20 - 20000 Hz, ensuring clear audio quality. With a cable length of 2.312 m and a lightweight design at 105 g, it provides comfort during long hours of use. The sleek black color adds a professional touch to your work setup.

## Long description

The EPOS ADAPT 135T USB-C II is a professional-grade, single-sided wired headset engineered to meet the rigorous demands of modern office environments and call centers. This headset features a sleek, black design and is specifically optimized for Unified Communications and certified for Microsoft Teams, ensuring seamless integration into your digital workspace. With a focus on ergonomics and audio clarity, it provides a reliable communication tool for professionals who require consistent performance throughout the workday.
Advantages
This headset offers exceptional comfort due to its lightweight construction, allowing for extended wear without fatigue. The supraaural design ensures a secure fit, while the high-quality audio output delivers clear sound for both voice calls and multimedia applications. Its wired connectivity via USB-C and 3.5 mm jack provides a stable, plug-and-play experience, eliminating the need for battery management or wireless pairing issues. The robust build quality ensures longevity, making it a dependable choice for daily professional use.
Suitable for
Daily office communication and conference calls
Call center operations requiring reliable audio
Hybrid work environments and remote collaboration
Unified Communications platforms and Microsoft Teams users
When it may not be suitable
This headset may not be the ideal choice for users who require complete isolation from ambient noise, as the single-sided supraaural design allows for awareness of the surrounding environment. Additionally, those seeking wireless freedom or active noise cancellation features for high-traffic public spaces might find other models more appropriate for their specific needs.
Key specifications
Connectivity: Wired via USB-C and 3.5 mm jack
Wearing style: Head-band, single-sided
Ear coupling: Supraaural
Frequency range: 20 - 20000 Hz
Cable length: 2.312 m
Weight: 105 g
Color: Black
How to use
To use the EPOS ADAPT 135T USB-C II, simply connect the headset to your computer or mobile device using the integrated USB-C or 3.5 mm connector. The device is designed for plug-and-play functionality, meaning it should be automatically recognized by most operating systems and communication software. Once connected, adjust the headband to ensure a comfortable fit over your ear. You can then select the headset as your primary audio input and output device within your computer's sound settings or your preferred communication application.
What to consider before purchase
Verify that your device supports USB-C or has a 3.5 mm audio jack
Consider if a single-sided headset meets your need for environmental awareness
Ensure the cable length of 2.312 meters is sufficient for your workstation layout
Usage recommendations
For optimal audio performance and longevity, keep the headset cable free from sharp bends and store the device in a clean, dry place when not in use. Regularly wipe the ear pads with a soft, dry cloth to maintain hygiene and comfort during long sessions.

## Specifications

### Headphones

| Feature | Value |
|---|---|
| Headphone frequency | 20 - 20000 |
| Magnet type | Neodymium |
| Ear coupling | Supraaural |
| Driver type | Dynamic |

### Ports & interfaces

| Feature | Value |
|---|---|
| Connectivity technology | Wired |
| USB connectivity | Yes |
| USB connector | USB Type-C |
| 3.5 mm connector | Yes |
| Cable colour | Black |

### Performance

| Feature | Value |
|---|---|
| Cable length | 2.312 m |
| Product colour | Black |
| Total Harmonic Distortion (THD) | 55 % |
| Volume control | Button |
| Headset type | Monaural |
| Wearing style | Head-band |
| Operating keys | Multi-key, Mute, Volume +, Volume - |
| Recommended usage | Office/Call center |
| Product type | Headset |
| Control unit type | In-line control unit |

### Other features

| Feature | Value |
|---|---|
| Quantity | 1 |
| Microphone mute | Yes |

### Microphone

| Feature | Value |
|---|---|
| Microphone frequency | 100 - 8000 |
| Folding microphone | Yes |
| Microphone noise-canceling | Yes |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.105 kg |
| Height | 194 mm |
| Width | 160 mm |
| Depth | 58 mm |

### Operational conditions

| Feature | Value |
|---|---|
| Storage temperature (T-T) | -20 - 70 |
| Operating temperature (T-T) | -20 - 70 |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 157 g |
| Package depth | 160 mm |
| Package height | 60 mm |
| Package width | 180 mm |

### Packaging content

| Feature | Value |
|---|---|
| Quick start guide | Yes |

### Logistics data

| Feature | Value |
|---|---|
| Master (outer) case height | 407 mm |
| Master (outer) case width | 460 mm |
| Master (outer) case length | 543 mm |
| Products per master (outer) case | 40 pc(s) |
| Harmonized System (HS) code | 85183000 |

## FAQ

### How much does the Headset EPOS ADAPT 135T USB-C II cost, and is it available for purchase?

The price is 29.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 20 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 03.08.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Sennheiser products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Sennheiser service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: ear coupling, connectivity technology, cable length, weight, product colour, wearing style, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/9818234/59531144_large.webp