CMF Headphone Pro Wireless Headphones vs Sennheiser CX 686i Wired Earphones comparison

Show Only Differences Highlight Differences	CMF Headphone Pro Wireless Headphones	Sennheiser CX 686i Wired Earphones
ratings
Overall NDTV Rating	Read Review	-
Design / Comfort Rating		-
Audio Quality Rating		-
Battery Life Rating		-
Value For Money Rating		-
key specs
Colour	Light Green	Green
Headphone Type	Over-Ear	In-Ear
Microphone	Yes	Yes
Connectivity	Wireless	Wired
Type	Headphones	Earphones
general
Brand	CMF by Nothing	Sennheiser
Model	CMF Headphone Pro Wireless Headphones	CX 686i Wired Earphones
Release date	January 13, 2026	March 30, 2014
Colour	Light Green	Green
Type	Headphones	Earphones
Headphone Type	Over-Ear	In-Ear
Connectivity	Wireless	Wired
Model Number	-	CX 686i
product details
Microphone	Yes	Yes
Driver Size (mm)	40	-
Number of Drivers	1	-
Microphone Impedance (Ohms)	-	-44
Cord Length (Metres)	-	1.2
Connector Size	-	3.5mm
sound features
Noise Reduction (dB)	40	-
Active Noice Cancellation	Yes	-
Impedance (Ohms)	-	20
Sensitivity (dB)	-	118
Frequency Response Range	-	18Hz-20,000Hz
connectivity features
Bluetooth	Yes	No
Bluetooth Version	5.4	-
Bluetooth Codec Support	SBC, LDAC	-
battery features
Charging Port	USB Type-C	-
Battery Life (Hrs)	100	-

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