{{ totalProductsCount }}

In cart {{totalProductsCount}} item(s)

Total:
{{sum | formatAmount}}

Your cart is empty

header-product Headset DEFENDER FreeMotion B400 — wired & wireless, USB-C, AUX, closed supraaural headphones, 20–20000 Hz, 118 dB, LED backlight, black
25.99 €

Headset DEFENDER FreeMotion B400 — wired & wireless, USB-C, AUX, closed supraaural headphones, 20–20000 Hz, 118 dB, LED backlight, black

DEFENDER FreeMotion B400 headset Photo 1
DEFENDER FreeMotion B400 headset Photo 2
DEFENDER FreeMotion B400 headset Photo 3
DEFENDER FreeMotion B400 headset Photo 4
DEFENDER FreeMotion B400 headset Photo 5
DEFENDER FreeMotion B400 headset Photo 6
DEFENDER FreeMotion B400 headset Photo 1
DEFENDER FreeMotion B400 headset Photo 2
DEFENDER FreeMotion B400 headset Photo 3
DEFENDER FreeMotion B400 headset Photo 4
DEFENDER FreeMotion B400 headset Photo 5
DEFENDER FreeMotion B400 headset Photo 6
Keep track of price changes You keep track of price changes
Watch the price drop

Leave your address - as soon as the price of the product goes down, you'll know about it right away

You keep track of price changes

Headset DEFENDER FreeMotion B400 — wired & wireless, USB-C, AUX, closed supraaural headphones, 20–20000 Hz, 118 dB, LED backlight, black

{{email}}
You keep track of price changes

Headset DEFENDER FreeMotion B400 — wired & wireless, USB-C, AUX, closed supraaural headphones, 20–20000 Hz, 118 dB, LED backlight, black

{{email}}
{{selectedOffer && selectedOffer.price | formatAmount}}

Short description

DEFENDER FreeMotion B400 is a head-band headset with closed supraaural cups for universal use. It supports wired and wireless connectivity with USB Type‑C and AUX inputs, and includes one USB‑A port. Frequency response is 20–20000 Hz with 118 dB sensitivity. Features LED backlight and lightweight 0.22 kg construction for comfortable everyday wear.
Available at price 25.99 €: 2 pcs.
Total available for order: 8 pcs.
Warranty: 2 Years
SKU: 10900982
Manufacturer: DEFENDER
free shipment

Cheapest delivery:

Venipak Pickup LV, Venipak Locker LV

Pick-up points

Venipak Pickup LV

Venipak Locker LV

Cost

1.89 €

Deliver

{{selectedOffer.parcelStationDeliveryString}}

Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
Thursday {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
07.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.35 kg)
Parcel couriers
Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
07.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
payment
Payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay
Together cheaper
{{product.price | formatAmount}}
{{product.title}}
{{productBundle.reference.specialPrice | formatAmount}}
{{productBundle.title}}
{{productBundlePreviousPrice | formatAmount}}
{{productBundleSpecialPrice | formatAmount}}

You saving {{productBundleYouSave | formatAmount}}

Product information

Description

The Defender FreeMotion B400 is a compact, foldable wireless Bluetooth headset with wired connectivity via included audio cable and USB Type-C charging. It features LED backlit earcups, a built-in microphone for clear voice transmission, a MicroSD card slot for standalone MP3 playback and a lightweight supra-aural design with an adjustable headband. Battery life reaches up to 32 hours without backlight; actual runtime depends on volume, listening mode and conditions. The headset supports hands-free calls and music playback with a wireless range up to 15 m and weighs 220 g.

Advantages

Foldable construction and light weight make the headphones easy to carry and store. LED backlight on the earcups can be switched off by double-clicking the M/EQ button. Built-in microphone and on-earcup controls allow answering calls and changing tracks without handling your phone. The MicroSD slot converts the headset into an MP3 player for offline listening, and the included audio cable enables wired use when the battery is discharged.

Suitable for

  • Everyday music listening and internet radio
  • Hands-free phone calls and voice communication
  • Travel and commuting thanks to foldable design
  • Listening without a smartphone using MicroSD cards
  • Use with laptops or devices via wired connection when needed

Key specifications

  • Model: Defender FreeMotion B400 (MPN 63400, EAN 4745090824162)
  • Connectivity: Bluetooth and wired (audio cable included), USB Type-C charging
  • Frequency range: 20–20,000 Hz
  • Wireless range: up to 15 m
  • Battery life: up to 32 hours (without backlight)
  • Weight: 220 g
  • Ear coupling: supra-aural; wearing style: head-band
  • Color: Black

How to use

Power on the headset and pair it with your Bluetooth device following standard pairing procedures. Use the on-earcup controls to play/pause music, skip tracks and answer or end calls. To play music from a MicroSD card, insert a supported MicroSD card into the slot and use the controls to navigate tracks. If the battery is low, connect the provided audio cable between the headset and your device for wired listening or recharge via the USB Type-C port.

Usage recommendations

For optimal battery life, disable LED backlight by double-clicking the M/EQ button when backlight is not needed. Keep the headset within the specified wireless range and avoid prolonged exposure to high volume levels to preserve hearing and device performance.

Specifications

Ear coupling:
Supraaural
Connectivity technology:
Wired & Wireless
Weight:
0.22 kg
Wearing style:
Head-band
Product colour:
Black
All features

Headphones

Headphone frequency:
20 - 20000
Headphone sensitivity:
118 dB
Ear coupling:
Supraaural
Acoustic system:
Closed
Intraaural headphones type:
Earbuds
Noise canceling type:
Passive
Diaphragm diameter:
40 mm
Noise canceling:
Yes

Ports & interfaces

Connectivity technology:
Wired & Wireless
Bluetooth version:
5.3
Wireless range:
15 m
Frequency band:
2.402 - 2.48
Bluetooth:
Yes
Bluetooth profiles:
A2DP, AVRCP, HFP, HSP
USB connectivity:
Yes
USB connector:
USB Type-C
3.5 mm connector:
Yes

Performance

Product colour:
Black
Volume control:
Button
Control type:
Buttons
Detachable cable:
Yes
Housing material:
Plastic
Headset type:
Binaural
Wearing style:
Head-band
Operating keys:
Multi-key
Recommended usage:
Calls/Music/Sport/Everyday
Product type:
Headphones
Music playback:
Yes
Adjustable headband:
Yes
Control unit type:
On-ear control unit

Technical details

Pallet ITF-14 (EU):
14745090824169

Other features

Equalizer:
Yes
Talk time:
32 h
Continuous audio playback time:
32 h
Backlight colour:
Multicolour
Backlight:
Yes

Microphone

Microphone frequency:
20 - 20000
Microphone sensitivity:
-42 dB
Detachable microphone:
Yes

Design

Foldable:
Yes
On/off switch:
Yes

Weight & dimensions

Weight:
0.22 kg
Height:
190 mm
Width:
175 mm
Depth:
80 mm

Battery

Battery technology:
Lithium-Ion (Li-Ion)
Battery type:
Built-in battery
Battery capacity:
800 mAh
Battery operated:
Yes
Charging source:
USB

Operational conditions

Operating temperature (T-T):
-20 - 60

Packaging data

Package weight:
350 g
Package depth:
85 mm
Package height:
170 mm
Package width:
153 mm
Package type:
Hanging box

Packaging content

Cables included:
Audio (3.5mm)

Logistics data

Master (outer) case height:
550 mm
Master (outer) case width:
360 mm
Master (outer) case gross weight:
8400 g
Master (outer) case length:
325 mm
Products per master (outer) case:
24 pc(s)
Master (outer) case volume:
0.0643 cm³
Shipping (inner) case volume:
0.0022 cm³

Music player

Compatible memory cards:
MicroSD (TransFlash)

Certificates

Compliance certificates:
RoHS, CE

Description

Machine translation. Load original

Similar products

{{product.title}} Show details Hide details

{{highlightedFeature.featureTitle}}:

{{getProductFeatureValueById(product, highlightedFeature.featureId)}}

{{product.price | formatAmount}}
Might be useful
{{product.manufacturerName}}
{{product.categoryName}}
{{product.title}}
{{product.specialPrice}}
{{product.price}}
Stock data
Warehouse Stock Delivery to the store Store Price
EU2 2 Thursday Best delivery 25.99 € Best price
WH356 4 14.07.2026 29.99 €
Available only for legal entities
Warehouse Stock Delivery to the store Store Price
WH109 2 27.07.2026 43.49 €
25.99 €
Stock: 2
Delivery Date: Thursday Best delivery
Warehouse: EU2
29.99 €
Stock: 4
Delivery Date: 14.07.2026
Warehouse: WH356
Available only for legal entities
43.49 €
Stock: 2
Delivery Date: 27.07.2026
Warehouse: WH109

Customer reviews

Customer questions

FAQ

How much does the DEFENDER FreeMotion B400 headset cost, and is it available for purchase?

The price is 25.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 Thursday 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

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, wearing style, product colour, 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.

Where can I download the instructions for DEFENDER FreeMotion B400 headset?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
shipping
Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
payment
Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
warranty
Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.