Compare Panasonic M500B vs Sennheiser HD 350BT vs Sennheiser PXC 550-II
Connectivity
Ports
3.5mm, USB-C
USB-C
Micro-USB
Wireless Connectivity
Bluetooth 5.0
Bluetooth 5.0
Bluetooth 5
Wireless Range
10 m
Construction
Battery | Capacity
320 mAh
Cable
1.2 m detechable
Colors
Black, White
Black, White
Drivers
40 mm
Dynamic, 32mm
Form Factor
Over-ear wireless headphones
Wireless headphones, over-ear headphones
Headphone Type
Closed headphones, Dynamic headphones
Dynamic headphones, Closed headphones
Dynamic headphones
Magnet
Neodymium
Microphone
MEMS
MEMS
Dimensions
Size | Depth
63 mm
Size | Height
174 mm
Size | Width
136 mm
Weight
316 g
238 g
227 g
Function
Audio
Base Reactor
Bluetooth Codecs
SBC, AAC
SBC, AAC, AptX, AptX Low Latency
SBC, aptX, aptX Low Latency, AAC
Bluetooth Profiles
A2DP, AVRCP, HSP, HFP
HSP, HFP, AVRCP, A2DP
Fast Charging
15 minutes for 1.5 hours
Microphone Pickup Pattern
Dual Beamforming
Noise Cancellation
No
No
Performance
Battery Life
30 h
30 hours music playback via Bluetooth
20 h (ANC + A2DP) / 30 h (ANC + wired)
Charging Time
4 h
2 h
Frequency Response
20Hz - 20kHz
18Hz to 22kHz (-10 dB)
17Hz - 23kHz
Impedance
27 ohms
Active: 490 ohms / Passive: 46 ohms
Max Sound Level
108 dB (1 kHz/0 dBFS)
Microphone Frequency Response
80 Hz to 6000 Hz (-3 dB)
50Hz - 10kHz
Sensitivity
100 dB / mW
110 dBSPL
Production
Debut
2020 CES
2020 CES
2019 IFA
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