Sennheiser PC151 Wired Headset vs Sennheiser 506504 Wired Headset comparison

Show Only Differences Highlight Differences	Sennheiser PC151 Wired Headset	Sennheiser 506504 Wired Headset
key specs
Colour	Black	Black
Headphone Type	Over-Ear	Over-Ear
Microphone	Yes	Yes
Connectivity	Wired	Wired
Type	Headset	Headset
general
Brand	Sennheiser	Sennheiser
Model	PC151 Wired Headset	506504 Wired Headset
Release date	March 17, 2012	May 22, 2017
Colour	Black	Black
Type	Headset	Headset
Headphone Type	Over-Ear	Over-Ear
Connectivity	Wired	Wired
Model Number	PC151	506504
product details
Microphone	Yes	Yes
Cord Length (Metres)	3	2.1
sound features
Impedance (Ohms)	32	-
Sensitivity (dB)	114	113
Frequency Response Range	18Hz-22,000Hz	16Hz-16,000Hz
connectivity features
Bluetooth	No	No