Compare Sennheiser CX True Wireless vs Sennheiser CX 400BT
Connectivity
Ports
USB-C
USB-C
Wireless Connectivity
Bluetooth 5.2
Bluetooth 5.1
Construction
Battery | Capacity
2x 60 mAh (each earbud) + 400 mAh (charging case)
Drivers
TrueResponse Transducer Sennheiser 7mm dynamic driver
Sennheiser 7mm dynamic driver
Headphone Type
In-ear, closed
In-ear, closed
Microphone
2 mic beamforming arrays (4 mics in total)
Dimensions
Weight
2x 6g (earbud) + 37g (charging case)
2x 6g (earbud) + 37g (charging case)
Function
Bluetooth Codecs
SBC, AAC, aptX
SBC, AAC, aptX
Bluetooth Profiles
A2DP, AVRCP, HFP
A2DP, AVRCP, HSP, HFP
Fast Charging
15 min for 1 h playtime
Noise Cancellation
Passive
Performance
Battery Life
9 h with earbuds, 27 h with charging case
7 h with earbuds, 20 h with charging case
Charging Time
1.5 h
1.5 h
Frequency Response
5 Hz - 21 kHz
5 Hz - 21 kHz
Microphone Frequency Response
100 Hz - 10 kHz
100 Hz - 10 kHz
Production
Availability
2021-07-08
2020-09-15
Debut
2021-06-28
2020-09-01
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