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Sennheiser HD 400U Wired Earphones vs Audio Technica ATH BT09 Wireless Earphones

Sennheiser HD 400U Wired Earphones vs Audio-Technica ATH-BT09 Wireless Earphones comparison

Show Only Differences Highlight Differences	Sennheiser HD 400U Wired Earphones	Audio-Technica ATH-BT09 Wireless Earphones
key specs
Headphone Type	In-Ear	In-Ear
Microphone	Yes	Yes
Connectivity	Wired	Wireless
Type	Earphones	Earphones
Colour	-	Black
general
Brand	Sennheiser	Audio-Technica
Model	HD 400U Wired Earphones	ATH-BT09 Wireless Earphones
Release date	April 22, 2026	February 15, 2017
Type	Earphones	Earphones
Headphone Type	In-Ear	In-Ear
Connectivity	Wired	Wireless
Colour	-	Black
Model Number	-	ATH-BT09
product details
Microphone	Yes	Yes
Cord Length (Metres)	1.2	-
Driver Type	Dynamic	-
Driver Size (mm)	9.7	8.5
Weight (g)	14.30	-
sound features
Impedance (Ohms)	28	-
Active Noice Cancellation	No	-
Frequency Response Range	17Hz-20,000Hz	20Hz-23,000Hz
connectivity features
Bluetooth	-	Yes
Bluetooth Version	-	2.1
Bluetooth range (Metres)	-	10
battery features
Charging Time (Hrs)	-	3
Battery Life (Hrs)	-	7

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