Bang & Olufsen Beoplay H9i BT 4.2 Over-ear 24hrs Black
Sennheiser HD 4.50 BTNC BT 4.0 25hrs Black
Match RatingMatch RatingMatch Rating
Wired
Wireless
Wired + Wireless Combo
Android (headphone port)
Apple iOS (headphone port)
PC or Mac
Use With Headphone Amp
MP3 Player
Musical Instrument
Commuting
Taking Flights
Train Journeys
PS4 Compatible
PS Vita Compatible
Audio Books
Music
Video Content (Netflix, YouTube, TV)
Radio
Gaming
Podcasts
Over-Ear
Making Phone Calls

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Technical Specifications

3.5mm Connector 1 mm 1 mm
AC Adapter Included Yes -
Acoustic System Name Closed Back Closed Back
Battery Life (max) 24 hours 25 hours
Battery Recharge Time 2.5 hours 2 hours
Battery Technology Lithium-Ion (Li-Ion) Lithium Polymer (LiPo)
Battery Type Built-in battery Built-in battery
Battery Voltage - 3.7 V
Bluetooth Yes Yes
Bluetooth Profiles - A2DP, aptX, AVRCP, HFP, HSP,
Bluetooth Version 4.2 - AAC 4.0
Cable Length 1.2 m 1.4 m
Cables Included Audio (3.5mm), USB Type-C Audio (3.5mm), Micro-USB
Carrying Case Yes Yes
Charging Source - USB
Colour of Product Black Black, Silver
Connectivity Technology Wired & Wireless Wired & Wireless
Connector Contacts Plating - Gold
Depth 5.2 mm -
Detachable Cable Yes Yes
Driver Type - Dynamic
Driver Unit Size 40 cm -
Ear Coupling Over-ear Over-ear
Ear Coupling - Over-ear Yes Yes
Foldable - Yes
Headphone Frequency 20 - 20000 Hz 18 - 22000 Hz
Headphone or Headset Mobile headset Mobile headset
Headphone Sensitivity 93 dB 113 dB
Headset Type Dual-ear Dual Ear
Height 20.0 mm -
Impedance 20 Ω (Ohms) 18 Ω (Ohms)
LED Indicators Yes Yes
Microphone Frequency - 100 - 10000 Hz
Microphone Number 4 2
Multi-function Control - Position - On-ear
Multi-function Control - Type Digital Digital
Multi-function Control Present Yes Yes
NFC / W1 - Yes
Noise Cancelling Yes Yes
Noise Reduction Yes -
Pouch Yes -
Rechargeable Yes Yes
Replaceable Ear Pads Yes -
Storage Pouch - Yes
USB Connectivity Yes Yes
USB Port - Micro - Yes
USB Port - Type C Micro
USB Port - Type C Yes -
Volume Control Present Yes Yes
Volume Control Type Touch Digital
Wearing Style Head-band Head-band
Weight 295 g 238 g
Width 19.5 mm -
Wireless Range - 10 m
Wireless Type Bluetooth Bluetooth

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