Finally, in case you are looking for a device with fashionable look, the CX400BT is not designed for you as they tend to be bigger and heavier in comparison with many other choices on the market.
Battery life and connectivity features
20 hours of use is not the most impressive and ideal battery life when it comes to a true wireless in-ear option. The buds provide users with seven hours of use, the case offers 13 hours and the battery will get full after 90 minutes of charge only. This is rather acceptable when in comparison with other options such as the Cambridge Audio Melomania 1 or the Sennheiser Momentum True Wireless 2.
Connectivity is through Bluetooth 5.1 integration, and in spite of the fact that there is no aptX HD compatibility equipped, the CX400BT can stream Hi-Res Audio files from Primephonic and Tidal without causing any issues. There is also no Low Latency feature but you will not encounter much problematic issues with syncing when you stream video content. Pairing is fast and secure even regarding long distances.
Whether to purchase the Sennheiser CX 400BT True Wireless
The Sennheiser keep the vocal front and centre they give because of spaces between the sounds in the background. As a result, it is easy to understand the shape and the scale of a soundstage along with the position of different instruments on it.
If you are the one who enjoys a big, detailed sound which is easy to follow, the CX400BT model is for you as it opens up a recording and good at describing and arranging a soundstage. This is also a suitable choice for you if you subscribe to a top-tier streaming services because aptX compatibility means streaming the biggest and the most information-rich digital audio files is easy, without any problems. Finally, buy it if you prioritize comfort when in use rather than aesthetic. However, if you want a long battery life, you should purchase this device because 20 hours is not an impressive length of time for earphones.