Headset Sennheiser CX 300S

Name: Headset Sennheiser CX 300S 508595
Brand: Sennheiser
SKU: 4257452
Price: 50.49 EUR
Availability: InStock

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Offer for legal entity, cashless payment. Why is an item available only for a legal entity?
This is due to long delivery times and limited product warranties.

Short description

The Sennheiser CX 300S wired in-ear headset offers exceptional sound quality with deep bass and clear treble. Designed for comfort, it features a lightweight design and multiple ear tip sizes for a perfect fit. Ideal for calls and music, the headset includes an integrated microphone and remote for easy control. The striking red color adds a stylish touch to your audio experience.

Available for order: 153 pcs.

Warranty: 2 Years

SKU: 4257452

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Deliver the order:

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to the Customer Service Center at Kengaraga 2b, Riga

14.07.2026 {{selectedOffer.officeDeliveryString}}

free

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Customer service center

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

14.07.2026 {{selectedOffer.officeDeliveryString}}

free

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

17.07.2026 {{selectedOffer.courierDeliveryString}}

From 9.89 € (Weight: 12.00 kg)

Parcel couriers

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

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From 1.99 €

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Payment Methods:

Bank transfer

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Product information

Description

Sennheiser CX 300S wired in-ear headset provides detailed sound reproduction with enhanced bass response thanks to Sennheiser transducer technology. The lightweight, ergonomic in-ear design reduces ambient noise and the included set of ear adapters (XS, S, M, L) ensures an individualized fit. An integrated microphone and smart remote allow call handling and music control across compatible devices.

Advantages

Built-in microphone and remote enable call management and playback control without reaching for the source device. The ergonomic in-ear shape offers effective ambient noise isolation for undisturbed listening. A durable, tangle-resistant cable increases reliability and everyday usability.

Suitable for

Listening to music with pronounced bass and clear treble
Hands-free calls on smartphones and other compatible devices
Commuting and travel where noise isolation is useful
Everyday use with wired audio players and computers

Key specifications

Impedance: 18 Ω
Sensitivity: 118 dB (44 dB V/Pa)
Plug: 3.5 mm
Cable length: 1.2 m
Weight: 12 g
Ear adapter sizes: XS, S, M, L
Connectivity: Wired, in-ear (intraaural)
Color: Red

How to use

Select the ear-adapter size that provides a comfortable, snug fit to achieve effective noise isolation and optimal sound. Insert the earphones with the correct left/right orientation, connect the 3.5 mm plug to your device, and use the remote to play/pause audio or answer calls. Keep the cable untangled and secure the cable to clothing if needed to reduce microphonics during movement.

Usage recommendations

For best performance, choose the ear-tip size that seals the ear canal, avoid excessive volume levels to protect hearing, and store the earphones in the supplied pouch when not in use to extend their lifespan.

Specifications

Ear coupling:: Intraaural
Connectivity technology:: Wired
Cable length:: 1.2 m
Weight:: 12 kg
Product colour:: Red
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:: Red
Total Harmonic Distortion (THD):: 0.5 %
Volume control:: Buttons
Headset type:: Binaural
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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Customer questions

FAQ

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

The price is 50.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 153 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 14.07.2026 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. 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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