Headset Sennheiser CX 300S

Name: Headset Sennheiser CX 300S 508594
Brand: Sennheiser
SKU: 4257453
Price: 40.49 EUR
Availability: InStock

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Short description

The Sennheiser CX 300S is a wired in-ear headset designed for calls and music. It features high-quality sound with deep bass and clear treble. The ergonomic design ensures a comfortable fit for extended use. With a built-in microphone, it allows for hands-free calls. The headset is compatible with various devices and comes in a sleek white finish.

Available at price 40.49 €: 36 pcs.

Total available for order: 123 pcs.

Warranty: 2 Years

SKU: 4257453

Learn more

Deliver the order:

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to the Customer Service Center at Kengaraga 2b, Riga

03.07.2026 {{selectedOffer.officeDeliveryString}}

free

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Customer service center

2b. Kengaraga str., Riga, Latvia, LV-1063

03.07.2026 {{selectedOffer.officeDeliveryString}}

free

Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!

08.07.2026 {{selectedOffer.courierDeliveryString}}

From 9.89 € (Weight: 12.00 kg)

Parcel couriers

Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Venipak Locker LV / Latvijas Pasts nodaļa

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From 1.99 €

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Payment Methods:

Bank transfer, Bank cards on-line, Apple Pay, Google Pay

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Product information

Description

Boost your sound with the Sennheiser CX 300S wired in-ear headset. It delivers detailed sound reproduction with enhanced bass response thanks to Sennheiser’s transducer technology, while the ergonomic In-Ear design reduces ambient noise for focused listening. The headset includes a built-in microphone and smart remote for call and music control and comes with four sizes of ear adapters for a personalized fit.

Advantages

The headset features a built-in microphone and remote that let you manage calls and music without reaching for your device. Its ergonomic in-ear design provides effective ambient noise isolation for undisturbed listening. The cable is tough and tangle-resistant to support durable everyday use.

Suitable for

Listening to music with enhanced bass and clear treble
Hands-free calls on smartphones and other devices
Commuting and travel where ambient noise reduction is beneficial
Everyday use with a durable, tangle-free cable

Key specifications

Impedance: 18 Ω
Sensitivity: 118 dB
Connector: 3.5 mm jack
Cable length: 1.2 m
Weight: 12 g
Ear adapter sizes: XS, S, M, L
Frequency sensitivity: 44 dB V/Pa
Connectivity: Wired
Ear coupling: Intraaural (in-ear)
Colour: White

How to use

Insert the ear adapters that best fit your ear canal (XS, S, M or L) to ensure a secure seal and optimal sound. Plug the 3.5 mm jack into a compatible device. Use the inline remote to play/pause music or answer and end calls; speak into the built-in microphone for hands-free communication. Store the earphones in the supplied pouch when not in use to protect them from damage.

Usage recommendations

For best sound and noise isolation, select the ear adapter that creates a comfortable yet snug seal. Keep the cable untangled and avoid excessive bending near the connector to prolong product life. Do not expose the headset to moisture or extreme temperatures.

Specifications

Ear coupling:: Intraaural
Connectivity technology:: Wired
Cable length:: 1.2 m
Weight:: 12 kg
Product colour:: White
Wearing style:: In-ear

All features

Headphones

Headphone frequency:: 17 - 21000
Headphone sensitivity:: 118 dB
Impedance:: 18 Ω
Ear coupling:: Intraaural
Acoustic system:: Closed

Ports & interfaces

Connectivity technology:: Wired
Bluetooth:: No
Microphone in:: Yes
USB connectivity:: No
3.5 mm connector:: Yes
2.5 mm connector:: No
6.35 mm connector:: No
RF connectivity:: No

Performance

Cable length:: 1.2 m
Product colour:: White
Total Harmonic Distortion (THD):: 0.5 %
Volume control:: Buttons
Headset type:: Monaural
Wearing style:: In-ear
Sound pressure level (max):: 118 dB
Recommended usage:: Calls/Music
Product type:: Headset

Other features

Material:: Rubber, Silicone
Pouch:: Yes

Microphone

Microphone frequency:: 100 - 10000
Microphone sensitivity:: 44 dB
Noise-canceling:: Yes

Weight & dimensions

Weight:: 12 kg

Packaging content

Accessories included in set:: 4 sizes silicone eartips

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Warehouse	Stock	Delivery to the store	Store Price
WH353	36	03.07.2026 Best delivery	40.49 € Best price

Available only for legal entities
Warehouse	Stock	Delivery to the store	Store Price
WH109	87	15.07.2026	41.99 €

40.49 €

Stock: 36

Delivery Date: 03.07.2026 Best delivery

Warehouse: WH353

Available only for legal entities

41.99 €

Stock: 87

Delivery Date: 15.07.2026

Warehouse: WH109

Customer reviews

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Customer questions

FAQ

How much does the Headset Sennheiser CX 300S cost, and is it available for purchase?

The price is 40.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 123 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 03.07.2026 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. 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, 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.

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