Compare OnePlus Buds vs Huawei FreeBuds 4i vs Ultimate Ears FITS
Connectivity
Ports
USB-C
USB-C
USB-C
Wireless Connectivity
Bluetooth 5.0
Bluetooth 5.2
Bluetooth 5.0
Wireless Range
10 m
Construction
Battery | Capacity
35mAh (earbud) x2 + 420mAh (charging box)
55 mAh Earbud + 215 mAh Charging Case
Carrying Case
Charging case
Colors
White / Gray
Red, Ceramic White, Carbon Black
Grey, Lilac, Midnight Blue
Drivers
1.34cm dynamic
10 mm dynamic
10 mm
Form Factor
True Wireless Headphones
True Wireless Earphones, Dynamic Headphones
Headphone Type
Dynamic headphones
In-ear
Microphone
Yes
Yes
Dimensions
Size | Depth
18.81 mm
23.9 mm
Size | Height
37.89 mm
37.5 mm
Size | Width
16.13 mm
21 mm
Weight
4.7 g
5.5 g
Function
Bluetooth Codecs
SBC, AAC, APT-X
Fast Charging
10 mins for 10 hours (charging box+earbuds) / 10 mins for 2 hours play time for the earbuds
10 minutes for 4 hours of playback
10 min of charge for 60 min of listening
Noise Cancellation
Active
Sensor
Wear detection sensor
Weather Resistance
IPX4
Sweat Resistant / IPX3
Performance
Battery Life
Up to 7 hours (music playback) / 4 hours (phone call) / Up to 30 hours music playback (w/ charging box)
7.5h ANC off / 10h ANC off / 22h w/ charging case
8 hours / 20 h with charging case
Charging Time
80 mins
Frequency Response
20Hz - 20kHz
20 Hz - 20 kHz
Max Sound Level
110 db at 500 Hz
Microphone Sensitivity
-38 dB ± 2dB
Sensitivity
97 dB ± 3dB
Production
Debut
2020-07
2021
2020-10-01
Made In
USA
Model Name
E501A
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