Not many headphones let you choose between open and closed adapters. But these Sennheiser SPORT TW headphones let you change your style.

The dark one is great for blocking out noise so you can focus on the gym.

The open adapter lets you hear what's going on around you, keeping you safer on an outdoor run.

Sennheiser Signature Sound is powered by a dynamic driver and TrueResponse transducer that give your music a boost.

Enjoy booming bass and rich sound to seriously boost your workout.

Characteristics:

- Package size: 17 x 12 x 5 cm
- Compatibility: Android, iOS
- Frequency response (speaker): 5 Hz to 21 kHz
- Dynamic transducer principle: closed back
- Transducer size: 7 mm, TrueResponse
- Sound pressure level (SPL): 110 dB SPL (1 kHz/0 dBFS)
- Total Harmonic Distortion (THD): < 0.08 % (1 kHz, 94 dB SPL)
- Frequency response (microphone): 100 Hz - 10 kHz
- Microphone pickup pattern: 2 beamforming microphone arrays (4 microphones in total)
- Operating time (headphones): 9 hours
- Operating time (charging case): 27 hours
- Degree of protection: IPX IP54, dust-proof and splash-proof (headphones)
- Bluetooth Version: Compatible with Bluetooth 5.2, Class 1, BLE
- Bluetooth audio codec: SBC, AAC, aptX™