CCA CX4

SPECIFICATIONS
Bluetooth version: V5.0
Bluetooth range: 20m
Sensitivity: 93dB
Frequency response: 20-40kHz
Charging Bin power: 400mA
Earphone weight: 4.9g (single ear)
Charging Bin weight: 50g
Configuration: 7mm dual magnetic dynamic*1/ 30019 high frequency balanced armature*1

The product looks like its bigger brother the CX10 in every way with little distinction other than color and Gold CCA lettering. it's just as comfortable , has good isolation and looks good to me.

Sound:
A little different than the CX the Bass is more aggressive here deep and punchy with enough details for most but can be thick at times. I find it good for that bass fix working out.
Mids are a little bit forward but not out of place typical response for a Vshaped earphone here.
Highs are extended to that sparkle realm KZ and CCA are known for.

Sound stage seems wider than the CCA CX10, almost like your listening to a home theater as a opposed to the CX10s big stereo sound.

Conclusion:
Well built for active use , light and comfortable, these pack a fun and good sound for the average true wireless user, great isolation make them a decent buy for that use.