Compare OnePlus Bullets Wireless Z vs DALI IO-4 vs OnePlus Bullets Wireless Z
Connectivity
Ports
USB-C
3.5mm + USB-C
USB-C
Wireless Connectivity
Bluetooth 5.0
Bluetooth 5.0
Bluetooth 5.0
Wireless Range
10 m (33 ft)
10 m (33 ft)
Construction
Buttons
Quick Switch, volume, skip track, phone calls, voice assistant
Quick Switch, volume, skip track, phone calls, voice assistant
Colors
Black / Blue
Army Green, Chalk White, Iron Black, Caramel White
Black / Blue
Drivers
9.2mm dynamic driver
50 mm free edge paper fibre cone
9.2mm dynamic driver
Form Factor
Wireless Headphones, In-ear
Over-ear headphones, wireless headphones
Wireless Headphones, In-ear
Headphone Type
Closed headphones, Dynamic headphones
Material
Closed back circumaural (over ear)
Dimensions
Weight
28 g
320 g
28 g
Function
Bluetooth Codecs
AAC, aptX, aptX HD
Fast Charging
10 minutes charge for 10 hours of audio
10 minutes charge for 10 hours of audio
Noise Cancellation
No
Weather Resistance
IP55
IP53
IP55
Performance
Battery Life
Up to 20 hours
60 h
Up to 20 hours
Charging Time
2.5 h
Frequency Response
10Hz - 20kHz
Impedance
25 ohms (Via 3.5mm)
Max Sound Level
100 dB
Sensitivity
200 mV rms / 175 mV rms
Production
Debut
2020-04
2019-10
2020-04
Model Name
E501A
E501A
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