Compare Sennheiser CX 400BT vs Ultimate Ears FITS
Connectivity
Ports
USB-C
USB-C
Wireless Connectivity
Bluetooth 5.1
Bluetooth 5.0
Construction
Carrying Case
Charging case
Colors
Grey, Lilac, Midnight Blue
Drivers
Sennheiser 7mm dynamic driver
10 mm
Form Factor
True Wireless Earphones, Dynamic Headphones
Headphone Type
In-ear, closed
Microphone
Yes
Dimensions
Weight
2x 6g (earbud) + 37g (charging case)
Function
Bluetooth Codecs
SBC, AAC, aptX
SBC, AAC, APT-X
Bluetooth Profiles
A2DP, AVRCP, HSP, HFP
Fast Charging
10 min of charge for 60 min of listening
Weather Resistance
Sweat Resistant / IPX3
Performance
Battery Life
7 h with earbuds, 20 h with charging case
8 hours / 20 h with charging case
Charging Time
1.5 h
Frequency Response
5 Hz - 21 kHz
20 Hz - 20 kHz
Max Sound Level
110 db at 500 Hz
Microphone Frequency Response
100 Hz - 10 kHz
Production
Availability
2020-09-15
Debut
2020-09-01
2020-10-01
Made In
USA
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