Sennheiser HD448 Wired Headphones vs Sennheiser RS220 Wireless Headphones comparison

Show Only Differences Highlight Differences	Sennheiser HD448 Wired Headphones	Sennheiser RS220 Wireless Headphones
key specs
Headphone Type	Over-Ear	Over-Ear
Connectivity	Wired	Wireless
Type	Headphones	Headphones
Colour	Black	Black
Microphone	-	No
general
Brand	Sennheiser	Sennheiser
Model	HD448 Wired Headphones	RS220 Wireless Headphones
Release date	March 17, 2012	November 8, 2012
Type	Headphones	Headphones
Headphone Type	Over-Ear	Over-Ear
Connectivity	Wired	Wireless
Colour	Black	Black
Model Number	HD448	RS220
connectivity features
Bluetooth	No	Yes
product details
Microphone	-	No
sound features
Sensitivity (dB)	-	106
Frequency Response Range	-	16Hz-22,000Hz