Sennheiser CX 300S In Ear Headphone with One-Button Smart Remote (Red)

Closeup of the Sennheiser CX 300S 3.5mm audio jack, 2 ear buds and inline remote + mic

Sennheiser CX 300S Headphones

Sennheiser CX 300S headphones continue the prestigious Sennheiser sound. The Sennheiser’s transducer technology reproduces every fine detail of your tracks and delivers enhanced bass. The ergonomic in-ear design fits your ear canals while isolating noise. The in-line remote and microphone allows you to easily manage your music and phone calls—all without having to reach for your device.

It's available in three colors: black, white and red.

High-Quality Sound

Sennheiser transducer technology delivers detailed sound with deep bass, leading you to the pure audio bliss as musicians intended.

Sound Isolating

These headphones' ergonomic in-ear design reduces outside noise to a minimum for an immersive listening experience no matter where you are.

Ear Adapters of Various Sizes Included

Four different sizes (XS/S/M/L) of ear adapters are included. Choose the pair that offers you the best in-ear comfort and acoustic seal.

In-Line Remote and Microphone

With the convenient in-line remote and microphone, you can control music and manage calls easily.

Tangle-Free Flat Cable

The tangle-free flat cable keeps you away from bothersome knots. You don’t need to worry that your cable got tangled anymore. Together with a tough design, the headphone will deliver long-lasting listening enjoyment.