Compare Bowers Wilkins PI7 vs Razer Hammerhead True Wireless Pro vs Sennheiser CX 400BT
Connectivity
Ports
USB-C
USB-C
USB-C
Wireless Connectivity
Bluetooth
Bluetooth 5.1
Bluetooth 5.1
Construction
Cable
20cm USB-C cable
Carrying Case
Yes
Colors
White, Charcoal
Drivers
9.2mm Dynamic Drive + Balanced Armature
10mm
Sennheiser 7mm dynamic driver
Form Factor
In-Ear, True Wireless Headphones, Earbuds
In-ear
Headphone Type
Dynamic headphones
In-ear, closed
Microphone
4x mics for ANC + 2x mics for telephony
Dimensions
Weight
8 g
5 g
2x 6g (earbud) + 37g (charging case)
Function
Bluetooth Codecs
AptX Adaptive, aptX HD, aptX Low Latency, aptX Classic, AAC, SBC
SBC, AAC
SBC, AAC, aptX
Bluetooth Profiles
A2DP v1.3.1, AVRCP v1.6.1, HFP v1.7.1, HSP v1.2, BLE GATT
A2DP, AVRCP, HSP, HFP
Fast Charging
2hrs with 15min charge
Microphone Pickup Pattern
Omnidirectional
Noise Cancellation
Yes
Performance
Battery Life
4hrs Bluetooth with ANC
4h per charge, up to 20h total
7 h with earbuds, 20 h with charging case
Charging Time
1.5 h
Frequency Response
10Hz ~ 20kHz
20Hz - 20kHz
5 Hz - 21 kHz
Impedance
16 ohms
Microphone Frequency Response
100Hz - 10kHz
100 Hz - 10 kHz
Microphone Sensitivity
-42 dB
Total Harmonic Distortion
0.3% (1kHz/10mW)
Production
Availability
2020-09-15
Debut
2021-04
2020-12-03
2020-09-01
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