Sennheiser HD 4.50BTNC Wireless Headphones vs Sennheiser HD238 Wired Headphones comparison

Show Only Differences Highlight Differences	Sennheiser HD 4.50BTNC Wireless Headphones	Sennheiser HD238 Wired Headphones
key specs
Colour	Black	Black
Headphone Type	Over-Ear	Over-Ear
Microphone	Yes	-
Connectivity	Wireless	Wired
Type	Headphones	Headphones
general
Brand	Sennheiser	Sennheiser
Model	HD 4.50BTNC Wireless Headphones	HD238 Wired Headphones
Release date	March 29, 2018	March 17, 2012
Colour	Black	Black
Type	Headphones	Headphones
Headphone Type	Over-Ear	Over-Ear
Connectivity	Wireless	Wired
Model Number	HD 4.50BTNC	HD238
product details
Microphone	Yes	-
Connector Size	3.5mm	-
Cord Length (Metres)	-	1.5
sound features
Impedance (Ohms)	18	32
Frequency Response Range	18Hz-22,000Hz	16Hz-23,000Hz
Sensitivity (dB)	-	114
connectivity features
Bluetooth	Yes	No