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header-product Koss KSC35WL Bluetooth Wireless Headphones Black with Microphone 15-25kHz 101dB
61.49 €

Koss KSC35WL Bluetooth Wireless Headphones Black with Microphone 15-25kHz 101dB

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Short description

Discover Koss KSC35WL Bluetooth wireless headphones in black, featuring a built-in microphone, 15-25kHz frequency range, and 101dB sensitivity. Order online with delivery in Riga, Latvia, and across Europe.
Available at price 61.49 €: 1 pcs.
Total available for order: 2 pcs.
Warranty: 2 Years
SKU: 3585489
Manufacturer: Koss
Charging device not included Charging device not included
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
Monday {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
12.11.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.30 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / DPD Paku skapis / Omniva LV / Latvijas Pasts pakomāts / Latvijas Pasts nodaļa
12.11.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
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Product information

Description

Discover the Koss KSC35WL Bluetooth Wireless Headphones in black, designed to deliver exceptional audio performance while ensuring everyday comfort and reliable connectivity. These headphones combine advanced acoustic engineering with a lightweight, portable design, featuring pivoting ear plates that clip securely and comfortably over your ears. Equipped with a built-in rechargeable lithium-ion battery, they offer over six hours of continuous operation on a single charge. The open hear-through sound architecture allows listeners to stay naturally connected to their surroundings, making them a practical choice for both office environments and active outdoor use.

Advantages

The Koss KSC35WL headphones utilize oxygen-free copper voice coils that significantly improve signal transmission and electrical conduction, resulting in cleaner and clearer audio reproduction. Computer-optimized neodymium iron boron magnet structures work together to deliver impressive sound quality, accurate dynamics, and ample volume across a wide frequency range. An integrated in-line microphone and remote control allow users to effortlessly manage playback functions, adjust volume levels, and handle phone calls without needing to reach for their paired device. Bluetooth 5.2 technology ensures a stable and efficient wireless connection, while the inclusion of a protective carrying case enhances portability and safety during transport.

Suitable for

  • Listening to music and podcasts during daily commutes
  • Making hands-free voice and video calls
  • Casual workouts and walking outdoors while remaining aware of ambient sounds
  • Mobile device and computer audio streaming via Bluetooth

When it may not be suitable

These headphones do not feature active noise-canceling technology, meaning they may not isolate users effectively in extremely loud environments such as airplanes or heavy industrial areas. Additionally, the open-ear design allows ambient sound to pass through, which might not be ideal for listeners who prefer complete acoustic isolation from their surroundings.

Key specifications

  • Bluetooth version: 5.2 wireless connection
  • Frequency range: 15-25kHz
  • Headphone sensitivity: 101dB
  • Battery life: 6+ hours with built-in rechargeable lithium-ion battery
  • Wearing style: In-ear, clip-on with pivoting ear plates and neck-band
  • Microphone: Built-in in-line microphone with remote control
  • Charging interface: USB Type-C charging port
  • Color: Black

How to use

To begin using the Koss KSC35WL headphones, charge the device fully using a compatible USB cable via the integrated charging port. Power on the headphones and activate Bluetooth on your smartphone, tablet, or computer to pair the devices using version 5.2 connectivity. Adjust the pivoting ear plates to fit comfortably over your ears, positioning them securely for your preferred listening angle. Use the in-line remote control buttons to manage your audio playback, adjust volume levels, or answer and end phone calls directly from the cable.

What to consider before purchase

  • Verify compatibility with your Bluetooth-enabled audio sources
  • Consider whether an open-ear design fits your acoustic preferences and listening environment
  • Take into account the battery life duration if you require extended all-day untethered usage without intermediate recharging

For optimal battery performance and longevity, fully charge the Koss KSC35WL headphones before initial use and avoid exposing the device to extreme temperatures or moisture.

Specifications

USB Type-C charging port:
Yes
AC adapter included:
No
Microphone type: The characteristics of the microphone bulit into the device in terms of the reception of signals from all or just one direction, i.e. omnidirectional (better for concerts and the like vs unidirectional, more suitable for voice recording.
In-line
Ear coupling: Ear coupling describes the way in which headphones or earphones stay attached to, or inside, the ear. There are three common types of ear coupling: circumaural, supra-aural and intra-aural. Circumaural headphones enclose your ears with large pads that suppress external noise. Supra-aural headphones are typically more lightweight and sit on top of the ears with small pads. Intra-aural headphones come in two basic designs and neither style sits on the head itself. The first are ear buds, which sit just outside of the ear canal, on top of your ear lobes. The second type is actually inserted directly into the ear canal and offers some external noise suppression.
Intraaural
Connectivity technology: The technology that enables connectivity of the device, e.g. wired or wireless.
Wireless
Headset type: A headset is headphones combined with a microphone, or one headphone with a microphone. Headsets provide the equivalent functionality of a telephone handset but with hands-free operation. Types of headsets include single earpiece (monaural) and double earpiece.
Binaural
Recommended usage: What the product should be used for, and how it should be used (e.g. ambient temperature).
Calls/Music
Product type: The sub-category of the product.
Headset
Product colour: The colour e.g. red, blue, green, black, white.
Black
Wearing style: The way in which the device is worn.
Neck-band, Open-ear
All features

Power

USB Type-C charging port:
Yes

Packaging content

Ear pads:
Yes
Ear pad material:
Foam
Pouch:
Yes
AC adapter included:
No

Packaging data

Package weight: Weight of the packaged product.
300 g
Package height: The distance from the top to the bottom of the packaging.
85 mm
Package depth: The distance from the front to the back of the packaging.
140 mm
Package width: The distance from one side of the packaging to the other.
220 mm

Battery

Continuous audio playback time: Number of hours on average for continuous play. This is dependent on the device battery capacity.
18 h
Battery type: Description of battery supplied with the product, such battery form factor (e.g. AA/AAA).
Built-in battery

Microphone

Microphone type: The characteristics of the microphone bulit into the device in terms of the reception of signals from all or just one direction, i.e. omnidirectional (better for concerts and the like vs unidirectional, more suitable for voice recording.
In-line

Headphones

Headphone sensitivity:
101 dB
Headphone frequency: The range of frequencies (low to high sounds) that the headphones can produce.
15 - 25000
Ear coupling: Ear coupling describes the way in which headphones or earphones stay attached to, or inside, the ear. There are three common types of ear coupling: circumaural, supra-aural and intra-aural. Circumaural headphones enclose your ears with large pads that suppress external noise. Supra-aural headphones are typically more lightweight and sit on top of the ears with small pads. Intra-aural headphones come in two basic designs and neither style sits on the head itself. The first are ear buds, which sit just outside of the ear canal, on top of your ear lobes. The second type is actually inserted directly into the ear canal and offers some external noise suppression.
Intraaural

Ports & interfaces

Bluetooth version: The type of bluetooth technology in the product e.g. Bluetooth Smart (v4.0).
5.2
Bluetooth: Bluetooth is a low-power radio technology developed to replace the cables and wires currently used to link or connect electronic devices such as personal computers, printers, and a wide variety of handheld devices including mobile phones. Because it uses radio-wave connectivity, a Bluetooth-enabled device has a constant, established connection to whatever browser it uses. This saves the user the trouble of logging on to check for emails or news updates, for example.
Yes
USB connector: What type of USB connector is built into the device.
USB Type-C
Connectivity technology: The technology that enables connectivity of the device, e.g. wired or wireless.
Wireless

Performance

Control type: The way in which the device is controlled.
Buttons
Control unit type:
In-line control unit
Operating keys:
Volume -, Volume +, Play/pause, Answer/end call
Product colour: The colour e.g. red, blue, green, black, white.
Black
Market segment:
Consumer
Headset type: A headset is headphones combined with a microphone, or one headphone with a microphone. Headsets provide the equivalent functionality of a telephone handset but with hands-free operation. Types of headsets include single earpiece (monaural) and double earpiece.
Binaural
Recommended usage: What the product should be used for, and how it should be used (e.g. ambient temperature).
Calls/Music
Wearing style: The way in which the device is worn.
Neck-band, Open-ear
Product type: The sub-category of the product.
Headset

Description

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Stock data
Warehouse Stock Delivery to the store Store Price
BT5 1 Monday Best delivery
Fast shipping
61.49 € Best price
WH353 1 20.11.2026
77.99 €
Fast shipping
61.49 €
Stock: 1
Delivery Date: Monday Best delivery
Warehouse: BT5
77.99 €
Stock: 1
Delivery Date: 20.11.2026
Warehouse: WH353

Customer reviews

Customer questions

FAQ

How much does the Koss KSC35WL Bluetooth Wireless Headphones Black cost, and is it available for purchase?

The price is 61.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 Monday 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: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. 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 Koss 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 Koss 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: usb type-c charging port, ac adapter included, microphone type, ear coupling, connectivity technology, headset type, recommended usage, product type, 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.
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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.
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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.