The Sennheiser CX 300S (S508594) in-ear headphones with built-in microphone and smart remote control are a wired model that provides dynamic, detailed sound and effective isolation from ambient noise. With a frequency response of 17-20,000 Hz, 118 dB high dynamics and an ergonomic design, they are perfect for listening to music and making calls.

The closed-in-ear design combined with flexible earbuds effectively reduces external sounds. Passive noise isolation allows you to focus on music even in noisy environments – on public transport, in the office or while walking. The ergonomic design ensures a stable and comfortable fit in your ear.

The model is equipped with dynamic drivers with Sennheiser technology, which offer deep bass, a crisp midrange and clear highs. The 18 Ω impedance makes the headphones work well with smartphones and other portable devices, providing the right power and sound clarity.

The built-in microphone and the in-line remote control allow you to conveniently answer calls without having to reach for your phone. The 1.2 m cord is designed to reduce tangles and increase durability in everyday use. Included are interchangeable ear adapters in four sizes (XS, S, M, L) and a practical storage case.

Specification:
Type: in-ear headphones, closed
Connection type: wired
Frequency response: 17-20,000 Hz
Dynamic Rate (SPL): 118 dB
Impedance: 18 Ω
Microphone: yes
Volume control: no
Active Noise Cancellation (ANC): no
Connector: jack 3.5mm
Cable length: 1.2m
Foldable design: no
Resistance: no
Waterproof: no
Weight: 12 g
Accessories: earbud adapters (XS, S, M, L), case, microphone cable
Warranty: 24 months