Sennheiser HD 400U Wired Earphones vs JBL SYNCHROS E40BT Wireless Headphones comparison

Show Only Differences Highlight Differences	Sennheiser HD 400U Wired Earphones	JBL SYNCHROS E40BT Wireless Headphones
key specs
Headphone Type	In-Ear	On-Ear
Microphone	Yes	Yes
Connectivity	Wired	Wireless
Type	Earphones	Headphones
Colour	-	Black
general
Brand	Sennheiser	JBL
Model	HD 400U Wired Earphones	SYNCHROS E40BT Wireless Headphones
Release date	April 22, 2026	September 19, 2014
Type	Earphones	Headphones
Headphone Type	In-Ear	On-Ear
Connectivity	Wired	Wireless
Colour	-	Black
Model Number	-	SYNCHROS E40BT
product details
Microphone	Yes	Yes
Cord Length (Metres)	1.2	-
Driver Type	Dynamic	-
Driver Size (mm)	9.7	40
Weight (g)	14.30	205.00
Connector Size	-	3.5mm
sound features
Impedance (Ohms)	28	32
Active Noice Cancellation	No	-
Frequency Response Range	17Hz-20,000Hz	-
connectivity features
Bluetooth	-	Yes
Bluetooth Version	-	3
battery features
Charging Time (Hrs)	-	3
Battery Capacity (mAh) Earpieces	-	610

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