The Sennheiser CX 6.00BT impressed us with their inconspicuous earbud design, light weight, good build quality, and decent feature set. Audio quality is good too, but the slightly shrill highs are when you bump the volume up can get fatiguing very quickly.

Light and well-built; Strong bass with detailed mid-range; Two active connections possible; Inconspicuous design

Sub-par battery life; Highs sound shrill at high volumes; No bundled travel pouch

Like every pair of sennheiser earphones I have owned, these are great until one of the earbuds stops working for no apparent reason. Perhaps I am clumsy or just unlucky, or possibly this is a common point of failure with this brand.

I also got little no low end with these initially. I swapped out the smaller ear pieces for the next size up and instantly the bass was there. I have collected audio equipment for 25 yrs and these are some of the best headphones I have ever owned.

Awesome sound quality ,and good battery life; Comfortable and look great

None so far

The Sennheiser CX 6.00BT is a definite step up in sound quality from the headphones that come with any portable device I have ever purchased. The improved sound quality and comfort make the CX 6.00BT easy to recommend.

I read a lot of reviews before purchasing the Sennheiser headphones. Set up very easy, After charging the unit up, I paired the headphones to my S10 Within minutes disconnecting issue via bluetooth. Tried again pairing to tv, again disconnecting issues.

The base is not very good. This caused a little trouble for me as my mobile phone does not allow me to set the sound settings (equalizer) when I run the headset via Bluetooth - I couldn't make the sound so much better.

Good product. Sound is OK.

Sennheiser has succeeded with the CX 6.00 BT in delivering big results in a compact package. The in-ears sonic enhancements are certainly impressive, providing powerful sound that's incredibly rich and detailed.

The base is great, good on the motor bike fits into your ears

Really good, clear, bassy sound. They're easy to connect to your phone and are really comfortable to wear.