Compare Huawei FreeBuds 4i vs Bowers Wilkins PI7 vs Redmi Buds 3 Pro
Connectivity
Ports
USB-C
USB-C
USB-C
Wireless Connectivity
Bluetooth 5.2
Bluetooth
Bluetooth 5.2
Wireless Range
10 m
Construction
Battery | Capacity
55 mAh Earbud + 215 mAh Charging Case
35mAh / 0.13Wh
Cable
20cm USB-C cable
Carrying Case
Yes
Colors
Red, Ceramic White, Carbon Black
White, Charcoal
Glacier Gray, Graphite Black
Drivers
10 mm dynamic
9.2mm Dynamic Drive + Balanced Armature
9 mm composite vibrating diaphragm coil
Form Factor
In-Ear, True Wireless Headphones, Earbuds
In-Ear, True Wireless Headphones
Headphone Type
In-ear
Dynamic headphones
Dynamic headphones
Microphone
Yes
4x mics for ANC + 2x mics for telephony
3 microphones per earbud
Dimensions
Size | Depth
23.9 mm
25.4 mm
Size | Height
37.5 mm
21.3 mm
Size | Width
21 mm
20.3 mm
Weight
5.5 g
8 g
4.9 g
Function
Bluetooth Codecs
AptX Adaptive, aptX HD, aptX Low Latency, aptX Classic, AAC, SBC
Bluetooth Profiles
A2DP v1.3.1, AVRCP v1.6.1, HFP v1.7.1, HSP v1.2, BLE GATT
Fast Charging
10 minutes for 4 hours of playback
2hrs with 15min charge
10 minutes for 3 hours
Noise Cancellation
Active
Yes
Active Noise Cancellation
Sensor
Wear detection sensor
Wireless Charging
Yes
Performance
Battery Life
7.5h ANC off / 10h ANC off / 22h w/ charging case
4hrs Bluetooth with ANC
6 hours music w/ ANC off, up to 28 hours w/ charging case
Charging Time
1 hour
Frequency Response
10Hz ~ 20kHz
Impedance
32 ohms
Total Harmonic Distortion
0.3% (1kHz/10mW)
Production
Debut
2021
2021-04
2021-06-27
Model Name
TWSEJ01ZM
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