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About This Product

Offering a powerful, bass-driven stereo sound with greater clarity and improved dynamics over standard earbuds are the CX 300-II ear-canal phones. The various sizes of ear adapters (S/M/L sizes) provided in the package allow for a customized fit as well as exceptional noise blocking capability.


High-quality dynamic speaker systems for bass-driven stereo sound and durability

Personalized fit in the ear canals functions as an earplug and high-quality speaker

Customizable ear adapter system achieves the perfect fit

Convenient carrying pouch included

Asymmetrical cable reduces tangles and cable clutter

Built-tough with a 2 YEAR warranty!

**Important wearing note! The longer side of the asymetrical cable goes behind the neck and into the opposite ear. This mimics a single sided cable and reduces the amount of cable in front of the wearer during physical activity. This is a safety and ergonomic feature. Please contact Sennheiser with any questions about product fit

Only purchase from an authorized dealer.

Compatible (listen only) with latest generation of tablets

Additional Info

Jack plug

3.5 mm 
Wearing style Ear-canal 
Impedance 16 Ω 
Frequency response (Headphones) 19 - 21000 Hz 
Sound pressure level (SPL) 113 dB 
Cable length 1.2 m 
Transducer principle Dynamic 


Width: 2.00 cm
Height: 8.00 cm
Length: 5.00 cm
Weight: 0.20 kg

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