Listen to clear, customized sound without wires using the Sennheiser CX True Wireless In-Ear Headphones. Engineered with bespoke Sennheiser TrueResponse 7mm drivers, the CX earbuds are designed to deliver clear and accurate music reproduction. Using the Smart Control app on your iOS or Android device, this audio can be customized to your liking with bass boost and equalizer adjustments. In addition to audio entertainment, the CX earbuds can be used throughout your day to communicate via hands-free calling, and keep you informed with access to your mobile device's digital assistant.

All-Day Battery Life

On a full charge the CX in-ear headphones gives you up to 9 hours of playback, and an additional 18 hours through the included charging case. Simply place the earbuds inside the case and close the lid to immediately activate the recharging process.

Quick Charge

Forgot to charge your CX earbuds? With the quick charge feature, that's not a problem. With just 10 minutes of charging inside the case, the earbuds can deliver up to 1 hour of playback.

Workout Friendly

Featuring IPX4-rated water resistance, the CX earbuds can withstand splashes and sweat, making them ideal for use in the gym.

Auto Call

Making it more convenient to receive calls hands-free, Sennheiser offers Auto Call. With Auto Call, incoming calls are automatically accepted once you remove the CX earbuds from the case.

Sidetone

When activated, this feature gives you the ability to hear yourself while on a call.

Additional Features

• Voice prompts for pairing, calls, and more
• Customizable touch controls
• Four pairs of eartips for a customized and comfortable fit