Compare Bowers & Wilkins PI4 vs Bowers & Wilkins PX7 vs Panasonic M700B
Connectivity
Ports
USB-C
3.5mm stereo jack + USB-C
3.5mm, USB-C
Wireless Connectivity
Bluetooth, USB-C
Bluetooth
Bluetooth 5.0
Wireless Range
10 m
Construction
Cable
20cm USB-A to USB-C cable
1.2m stereo audio cable + 1.2m USB-A to USB-C cable
1.2 m detechable
Carrying Case
Yes
Colors
Black, Gold, Silver
Space Grey, Silver, Carbon
Black, White
Drivers
14.2mm full range
43.6mm full range
40 mm
Form Factor
In-Ear, Neckband Wireless Headphones, Earbuds
Wireless Headphones, Over-Ear
Over-ear wireless headphones
Headphone Type
Dynamic headphones
Dynamic headphones
Closed headphones, Dynamic headphones
Magnet
Neodymium
Microphone
2x mics for ANC + 2x mics for telephony
4x mics for ANC + 2x mics for telephony
Dimensions
Weight
40 g
310 g
317 g
Function
Audio
Base Reactor
Bluetooth Codecs
AptX-Adaptive, aptX-HD, aptX-Classic, AAC, SBC
AptX Adaptive, aptX HD, aptX Classic, AAC, SBC
SBC, AAC
Bluetooth Profiles
A2DP v1.3.1, AVRCP v1.6.1, HFP v1.7.1, HSP v1.2, BLE GATT
A2DP v1.3.1, AVRCP v1.6.1, HFP v1.7.1, HSP v1.2, BLE GATT
A2DP, AVRCP, HSP, HFP
Fast Charging
3hrs with 15min charge
5hrs with 15min charge
15 minutes for 1.5 hours
Noise Cancellation
Yes
Yes
Yes
Performance
Battery Life
10hrs Bluetooth with ANC (12hrs w/o)
30 hrs Bluetooth with ANC
20 h
Charging Time
4 h
Frequency Response
10Hz ~ 30kHz
10Hz ~ 30kHz
20Hz - 20kHz
Impedance
20k Ohms
27 ohms
Sensitivity
100 dB / mW
Total Harmonic Distortion
0.3% (1kHz/10mW)
0.3% (1kHz/10mW)
Production
Accessory
Ear Tips: S / M / L
Debut
2019-10
2019-10
2020 CES
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