Compare Bowers Wilkins PI7 vs Redmi Buds 3 Pro vs Lenovo Smart Wireless Earbuds
Connectivity
Ports
USB-C
USB-C
USB-C
Wireless Connectivity
Bluetooth
Bluetooth 5.2
Bluetooth 5.2
Wireless Range
10 m
Construction
Battery | Capacity
35mAh / 0.13Wh
400 mAh
Cable
20cm USB-C cable
Carrying Case
Yes
Colors
White, Charcoal
Glacier Gray, Graphite Black
Black, White
Drivers
9.2mm Dynamic Drive + Balanced Armature
9 mm composite vibrating diaphragm coil
11mm dynamic drivers
Form Factor
In-Ear, True Wireless Headphones, Earbuds
In-Ear, True Wireless Headphones
In-ear, True wireless headphones
Headphone Type
Dynamic headphones
Dynamic headphones
Dynamic headphones
Microphone
4x mics for ANC + 2x mics for telephony
3 microphones per earbud
6x Microphones
Dimensions
Size | Depth
25.4 mm
47.7 mm / 1.88"
Size | Height
21.3 mm
56 mm / 2.2"
Size | Width
20.3 mm
28.4 mm / 1.12"
Weight
8 g
4.9 g
4.2 g / 0.009 lbs
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
Compatibility
IOS, Android 8, Windows
Fast Charging
2hrs with 15min charge
10 minutes for 3 hours
Noise Cancellation
Yes
Active Noise Cancellation
Active Noise Cancellation w/ 6 microphones
Weather Resistance
IPX4
Wireless Charging
Yes
Performance
Battery Life
4hrs Bluetooth with ANC
6 hours music w/ ANC off, up to 28 hours w/ charging case
Play time 5.4h (ANC on) / 7h (ANC off) + 3x extra charges w/ Charging Case (28h total)
Charging Time
1 hour
Frequency Response
10Hz ~ 20kHz
Impedance
32 ohms
Total Harmonic Distortion
0.3% (1kHz/10mW)
Production
Debut
2021-04
2021-06-27
2021-09-08 (Lenovo Tech World 2021)
Model Name
TWSEJ01ZM
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