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Sennheiser HD 400U Wired Earphones vs Sennheiser CX 400BT True Wireless Stereo (TWS) Earphones

Sennheiser HD 400U Wired Earphones vs Sennheiser CX 400BT True Wireless Stereo (TWS) Earphones comparison

Show Only Differences Highlight Differences	Sennheiser HD 400U Wired Earphones	Sennheiser CX 400BT True Wireless Stereo (TWS) Earphones
key specs
Headphone Type	In-Ear	In-Ear
Microphone	Yes	Yes
Connectivity	Wired	True Wireless Stereo (TWS)
Type	Earphones	Earphones
general
Brand	Sennheiser	Sennheiser
Model	HD 400U Wired Earphones	CX 400BT True Wireless Stereo (TWS) Earphones
Release date	April 22, 2026	-
Type	Earphones	Earphones
Headphone Type	In-Ear	In-Ear
Connectivity	Wired	True Wireless Stereo (TWS)
Model Number	-	CX 400BT
product details
Microphone	Yes	Yes
Cord Length (Metres)	1.2	-
Driver Type	Dynamic	Dynamic
Driver Size (mm)	9.7	7
Weight (g)	14.30	6.00
Number of Drivers	-	1
Water Resistant	-	No
Weight With Case (g)	-	49
sound features
Impedance (Ohms)	28	-
Active Noice Cancellation	No	-
Frequency Response Range	17Hz-20,000Hz	5Hz-21,000Hz
ratings
Overall NDTV Rating	-	Read Review
Design / Comfort Rating	-
Audio Quality Rating	-
Battery Life Rating	-
Value For Money Rating	-
connectivity features
Bluetooth	-	Yes
Bluetooth Version	-	5.1
Bluetooth Codec Support	-	SBC,AAC,aptX
battery features
Charging Port	-	USB Type-C
Battery Life (Hrs) Earpieces Only	-	6
Battery Life (Hrs) With Case Total	-	18

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