Product comparison · 2 headphones

Lenovo 4Z21P85373 headphones/headset Wired Head-band Office/Call center USB Type-C / USB Type-A Black vs Lenovo EPOS ADAPT 561 II

28specifications compared
14differ
14identical
38known for one product only

Key differences

Connectivity technology
- 4Z21P85373 headphones/headset Wired Head-band Office/Call center USB Type-C / USB Type-A Black:Wired
- EPOS ADAPT 561 II:Wired & Wireless
USB connector
- 4Z21P85373 headphones/headset Wired Head-band Office/Call center USB Type-C / USB Type-A Black:USB Type-C / USB Type-A
- EPOS ADAPT 561 II:USB Type-C
Bluetooth
- 4Z21P85373 headphones/headset Wired Head-band Office/Call center USB Type-C / USB Type-A Black:No
- EPOS ADAPT 561 II:Yes
Impedance
- 4Z21P85373 headphones/headset Wired Head-band Office/Call center USB Type-C / USB Type-A Black:50 Ω
- EPOS ADAPT 561 II:32 Ω
Driver unit
- 4Z21P85373 headphones/headset Wired Head-band Office/Call center USB Type-C / USB Type-A Black:3.2 cm
- EPOS ADAPT 561 II:4 cm
Total Harmonic Distortion (THD)
- 4Z21P85373 headphones/headset Wired Head-band Office/Call center USB Type-C / USB Type-A Black:0.5%
- EPOS ADAPT 561 II:0.3%
Number of microphones
- 4Z21P85373 headphones/headset Wired Head-band Office/Call center USB Type-C / USB Type-A Black:3
- EPOS ADAPT 561 II:2
Operating temperature (T-T)
- 4Z21P85373 headphones/headset Wired Head-band Office/Call center USB Type-C / USB Type-A Black:0 - 40 °C
- EPOS ADAPT 561 II:-20 - 70 °C

Side by side

Differences highlightedShow differences only

Comparison of 4Z21P85373, EPOS ADAPT 561 II
66 specifications	A Lenovo 4Z21P85373 headphones/headset Wired Head-band Office/Call center USB Type-C / USB Type-A Black Model 4Z21P85373 View product	B Lenovo EPOS ADAPT 561 II View product
Performance1 differ
FoldableKnown for one	Unknown — not stated by the source	Yes
Optimized forKnown for one	Unknown — not stated by the source	UC
Sound pressure level (max)Known for one	Unknown — not stated by the source	108 dB
CertificationDiffers	CB, CE, UKCA, RCM, FCC, ICES, KC, SDoC, BSMI	CB, BQB, CE, UKCA, RCM, FCC, ICES, BIS, SIRIM, SDoC, RAMATEL, ANATEL, BSMI
Control unit typeKnown for one	On-ear control unit	Unknown — not stated by the source
Control typeKnown for one	Buttons	Unknown — not stated by the source
Cable lengthKnown for one	1.8 m	Unknown — not stated by the source
Cable colourKnown for one	Black	Unknown — not stated by the source
Ports & interfaces3 differ
Connectivity technologyDiffers	Wired	Wired & Wireless
USB connectorDiffers	USB Type-C / USB Type-A	USB Type-C
BluetoothDiffers	No	Yes
Bluetooth profilesKnown for one	Unknown — not stated by the source	AAC, SBC
Bluetooth versionKnown for one	Unknown — not stated by the source	5.0
Wireless rangeKnown for one	Unknown — not stated by the source	30 m
Headphones3 differ
Maximum input powerKnown for one	Unknown — not stated by the source	50 mW
Acoustic systemKnown for one	Unknown — not stated by the source	Closed
ImpedanceDiffers	50 Ω	32 Ω
Headphone sensitivityKnown for one	Unknown — not stated by the source	-24 dB
Driver typeKnown for one	Unknown — not stated by the source	Dynamic
Driver unitDiffers	3.2 cm	4 cm
Total Harmonic Distortion (THD)Differs	0.5%	0.3%
Microphone1 differ
Microphone frequencyKnown for one	Unknown — not stated by the source	100 - 10000 Hz
Microphone input impedanceKnown for one	Unknown — not stated by the source	32 Ω
Folding microphoneKnown for one	Unknown — not stated by the source	Yes
Hybrid noise-cancelingKnown for one	Unknown — not stated by the source	Yes
Microphone direction typeKnown for one	Unknown — not stated by the source	Omnidirectional
Number of microphonesDiffers	3	2
Batteryidentical
Battery operatedKnown for one	Unknown — not stated by the source	Yes
Continuous audio playback time (ANC off)Known for one	Unknown — not stated by the source	46 h
Continuous audio playback time (ANC on)Known for one	Unknown — not stated by the source	24 h
Battery recharge timeKnown for one	Unknown — not stated by the source	3.5 h
Charging sourceKnown for one	Unknown — not stated by the source	USB
Talk time (ANC off)Known for one	Unknown — not stated by the source	41 h
Talk time (ANC on)Known for one	Unknown — not stated by the source	24 h
Standby timeKnown for one	Unknown — not stated by the source	1944 h
Operational conditions1 differ
Operating temperature (T-T)Differs	0 - 40 °C	-20 - 70 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	10 - 85%
Weight & dimensions1 differ
WeightDiffers	179 g	245 g
Packaging data4 differ
Package widthDiffers	205 mm	183 mm
Package depthDiffers	55 mm	65 mm
Package heightDiffers	210 mm	207 mm
Package weightDiffers	335 g	524.5 g
Package typeKnown for one	Unknown — not stated by the source	Box
Packaging contentidentical
Charging caseKnown for one	Unknown — not stated by the source	No
Receiver includedKnown for one	Unknown — not stated by the source	Yes
Wireless receiver interfaceKnown for one	Unknown — not stated by the source	USB Type-C
Safety sheetKnown for one	Unknown — not stated by the source	Yes
Cables includedKnown for one	Unknown — not stated by the source	USB Type-C to USB Type-C
Poweridentical
USB Type-C charging portKnown for one	Unknown — not stated by the source	Yes
Supplier featuresidentical
Charging timeKnown for one	Unknown — not stated by the source	210 min
Other featuresidentical
Other operating systems supportedKnown for one	Unknown — not stated by the source	ChromeOS
DistortionKnown for one	Unknown — not stated by the source	0.3%

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

More headphones comparisons

All headphones comparisons