# Headset EPOS \| SENNHEISER ADAPT 135T USB II

**URL:** https://aio.lv/en/product--sennheiser-1000900--9818232
**Data updated:** 2026-07-16 18:59 (EEST)
**Category:** Headphones
**Manufacturer:** Sennheiser
**Manufacturer code:** 1000900
**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-1000900--9818232

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 31.07.2026 | free |
| Pickup points | 05.08.2026 | 1.79 EUR |
| Courier delivery to door | 05.08.2026 | 4.99 EUR |

## Summary description

The EPOS \| SENNHEISER ADAPT 135T USB II is a wired headset designed for office and call center use. It features a frequency range of 20 - 20000 Hz, a cable length of 2.317 m, and weighs 107 g. The sleek black design complements any workspace, providing comfort and clarity during calls.

## Long description

The EPOS \| SENNHEISER ADAPT 135T USB II is a professional-grade wired headset engineered specifically for the modern office environment and call center operations. This single-sided headset combines a sleek, minimalist black design with high-quality audio performance, ensuring clarity during every conversation. With its lightweight construction and ergonomic headband, it is built to provide lasting comfort throughout long working hours, making it an essential tool for professionals who rely on consistent communication.
Advantages
This headset offers exceptional versatility through its dual connectivity options, featuring both a 3.5 mm jack and a USB connection. Being Microsoft Teams certified and optimized for Unified Communications, it ensures seamless integration with your existing software platforms. The supraaural design provides a balanced audio experience, while the robust cable length offers the freedom of movement necessary for a dynamic workspace. Its lightweight build reduces physical fatigue, allowing users to maintain focus during extended calls.
Suitable for
Professional office environments
Call center operations
Unified Communications and Microsoft Teams meetings
Hybrid workplace setups
When it may not be suitable
This headset may not be the ideal choice for users who require complete noise isolation, as the single-sided supraaural design allows ambient sound to remain audible. Additionally, those seeking wireless freedom for walking around the office may find the wired connection restrictive.
Key specifications
Wearing style: Head-band
Ear coupling: Supraaural
Connectivity: Wired (USB and 3.5 mm jack)
Cable length: 2.317 m
Frequency range: 20 - 20000 Hz
Weight: 107 g
Color: Black
How to use
To use the headset, simply connect the device to your computer or communication device via the USB port or the 3.5 mm jack. Once connected, the device is typically recognized automatically by most operating systems. Adjust the headband to ensure a secure and comfortable fit on your head. Position the microphone close to your mouth for optimal voice pickup during calls.
What to consider before purchase
Check if your primary device supports USB or 3.5 mm audio connections.
Consider whether a single-sided headset meets your needs for monitoring your surroundings.
Verify if your workspace layout accommodates the 2.317 m cable length.
Usage recommendations
For the best audio quality and microphone performance, ensure the headset is set as the default communication device in your computer's sound settings. Keep the cable free from sharp bends to maintain its longevity.

## 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-A |
| 3.5 mm connector | Yes |
| Cable colour | Black |

### Performance

| Feature | Value |
|---|---|
| Cable length | 2.317 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 | 0.107 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 | 159 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 \| SENNHEISER ADAPT 135T USB 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 31.07.2026 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/9818232/59531137_large.webp