# Headset DEFENDER Twins 638 wireless in-ear headphones, Bluetooth 5.0, talk time 2 h, black

**URL:** https://aio.lv/en/product--defender-63638--4286807
**Data updated:** 2026-01-21 10:56 (EET)
**Category:** Headphones
**Manufacturer:** DEFENDER
**Manufacturer code:** 63638
**EAN:** 4714033636384
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 19.49 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 16.11 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--defender-63638--4286807

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

DEFENDER Twins 638 is a wireless in-ear headset designed for calls and music. It uses Bluetooth 5.0+EDR with AVRCP and a 10 m wireless range. Closed acoustic system with 1 cm drivers covers 20–20,000 Hz; sensitivity 98 dB. Built-in microphone (100–16,000 Hz, 42 dB) provides talk time up to 2 hours. Compact and lightweight (40 g) for everyday mobile use.

## Long description

Wireless Bluetooth headset designed for active lifestyles. The earbuds are shaped with attention to ear anatomy to provide a secure fit that feels lightweight while staying fixed in place. The set includes a storage and charging case with a 300 mAh capacity that protects the earbuds during transport and provides additional charging on the go.
Advantages
Ergonomic in-ear design ensures comfortable long-term wear and stable fit during movement. Built-in microphone and multifunction control button on the earphones allow hands-free calls and easy media control. Compact charging case both stores and recharges the earbuds, extending usable time away from a power source.
Key specifications
Connection: Bluetooth wireless
Charging case capacity: 300 mAh
Battery life (earbuds): up to 4 hours
Operating range: up to 10 m
How to use
Take the earbuds out of the charging case and they will enter pairing mode. Enable Bluetooth on your device, select the headset from the available devices list, and confirm connection. Use the multifunction button on the earphones to answer or end calls and to control playback. Return the earbuds to the charging case after use to recharge them and store them safely.
Recommendations
Charge the case before first use. Keep the charging contacts clean and avoid exposing the earbuds and case to moisture. For best fit, insert each earbud so it sits comfortably and securely in the auricle.

## Specifications

### Headphones

| Feature | Value |
|---|---|
| Headphone frequency | 20 - 20000 |
| Headphone sensitivity | 98 dB |
| Driver unit | 10 mm |
| Ear coupling | Intraaural |
| Acoustic system | Closed |

### Ports & interfaces

| Feature | Value |
|---|---|
| Connectivity technology | Wireless |
| Bluetooth version | 5.0+EDR |
| Wireless range | 10 m |
| Frequency band | 2402–2480 |
| Bluetooth | Yes |
| Bluetooth profiles | HSP, AVRCP, HFP, A2DP |

### Performance

| Feature | Value |
|---|---|
| Product colour | Black |
| Wearing style | In-ear |
| Recommended usage | Calls/Music |
| Product type | Headset |

### Other features

| Feature | Value |
|---|---|
| Talk time | 2 h |

### Microphone

| Feature | Value |
|---|---|
| Microphone frequency | 100 - 16000 |
| Microphone sensitivity | 42 dB |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.04 kg |
| Height | 30 mm |
| Width | 30 mm |
| Depth | 65 mm |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 80 g |
| Package depth | 35 mm |
| Package height | 120 mm |
| Package width | 91 mm |

### Certificates

| Feature | Value |
|---|---|
| Compliance certificates | RoHS, CE |

## FAQ

### How much does the DEFENDER Twins 638 wireless in-ear headset cost, and is it available for purchase?

The price is 19.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 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 13.07.2026 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 DEFENDER 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 DEFENDER 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, 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/4286807/62245680_large.webp