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Lenovo Wireless Headset ANC Black
General
| Brand | Lenovo |
|---|---|
| Product Name | Lenovo Dual-Mode Wireless ANC Headset 6550 |
| Model Number | 4XD1S19778 (USB-C version) |
| Product Type | Wireless Over-Ear/On-Ear Communication Headset |
| Color | Black |
| Noise Cancellation | Hybrid Active Noise Cancellation (ANC) |
| Microphone Noise Reduction | AI-powered Environmental Noise Cancellation (ENC) |
| Certification | Microsoft Teams certified for open-office use |
| Recommended Use | Office work, online meetings, video calls, music and remote communication |
Body
| Dimensions | 19.4 x 16.1 x 5.1 cm |
|---|---|
| Weight | 165 g (headset only) |
| Build | Lightweight headset construction with cushioned ear pads and adjustable headband |
| Wearing Style | Headband-style headset |
| Color Finish | Black |
| Ear Cushions | Replaceable ear pads |
| Microphone Design | Double-sided boom microphone |
| LED Indicator | Busy light and headset status indicators |
Audio
| Driver Size | 40 mm |
|---|---|
| Frequency Response | 20 Hz - 20 kHz |
| Impedance | 32 ohms |
| Sensitivity | 115 ± 2.5 dB |
| Total Harmonic Distortion | Less than 2% |
| Audio Output | Stereo audio |
| Active Noise Cancellation | Hybrid ANC designed to reduce surrounding noise |
| Ambient Listening | Talk-through mode for hearing surrounding sounds without removing the headset |
| Audio Input | Bluetooth 5.3 and USB digital audio |
| Hi-Res Audio | Not specified |
| Spatial Audio | Not specified |
Microphone
| Microphone Configuration | 1 unidirectional boom microphone and 4 omnidirectional microphones |
|---|---|
| Noise Reduction | AI-powered Environmental Noise Cancellation (ENC) |
| Microphone Type | Boom microphone with additional microphones for noise processing |
| Microphone Mute | Yes |
| Flip-to-Mute | Boom microphone can be flipped up to mute |
| Call Controls | Answer, end, reject, hold and switch calls |
| Microphone Frequency Response | Exact frequency response not confirmed for this model |
Connectivity
| Bluetooth | Bluetooth 5.3 |
|---|---|
| Wireless Operating Distance | Up to 30 m in suitable conditions |
| USB Receiver | USB-C Bluetooth audio receiver included with model 4XD1S19778 |
| USB Audio | USB digital audio |
| USB Port | USB Type-C |
| Wired Audio | USB digital audio; 3.5 mm audio connection not specified |
| Multipoint Connection | Not confirmed in the available specification |
| Wireless Range Conditions | Actual range depends on obstacles, interference and connected devices |
Controls
| Power | Power on/off and Bluetooth pairing controls |
|---|---|
| ANC Control | ANC on/off and talk-through mode |
| Call Control | Answer, end, reject, hold and switch calls |
| Volume | Volume up and down |
| Media Control | Play, pause, forward and backward |
| Microphone Control | Mute and unmute |
| Voice Assistant | Supported |
| Microsoft Teams Button | Dedicated Teams button |
| Busy Light | 360-degree busy light to indicate availability |
Battery
| Battery Capacity | 640 mAh |
|---|---|
| Battery Type | Rechargeable battery; exact chemistry not specified |
| Playback Time | Up to 60 hours with ANC and busy light turned off |
| Talk Time | Up to 30 hours with ANC and busy light turned off |
| Charging Time | Approximately 2 hours |
| Charging Port | USB Type-C |
| Power Requirement | 5 V, 640 mA |
| Fast Charging | Not specified |
| Battery Life Conditions | Actual battery life varies with volume, ANC use, busy-light settings and connection conditions |
Compatibility
| Windows | Windows 10 and later |
|---|---|
| macOS | Supported |
| Android | Supported |
| iOS | Supported |
| Microsoft Teams | Certified for Microsoft Teams |
| Other Communication Platforms | Compatibility depends on the platform and available headset features |
Package Contents
| Headset | 1 |
|---|---|
| Bluetooth Audio Receiver | 1 USB-C receiver |
| USB Cable | 1 USB-C to USB-C cable |
| Carrying Pouch | 1 soft pouch |
| Setup Documentation | Setup poster and safety flyer |
| Warranty Documentation | Warranty poster |
| Charging Stand | Not listed as included with this model |
Environmental and Operating Conditions
| Minimum Operating Temperature | 0°C |
|---|---|
| Maximum Operating Temperature | 45°C |
| Maximum Relative Humidity | 90% |
| Water Resistance | No verified water-resistance rating |
| Dust Resistance | No verified dust-resistance rating |
Our Tests
| Performance | Independent benchmark results not available |
|---|---|
| Battery | Manufacturer-rated up to 60 hours playback with ANC and busy light off |
| Noise Cancellation | Hybrid ANC; independent attenuation measurements not available |
| Microphone Quality | Independent microphone test results not available |
| Loudspeaker | Not applicable as a standalone loudspeaker test; headset audio uses 40 mm drivers |
Eu Label
| Energy | No verified EU energy class found |
|---|---|
| Battery Endurance | Up to 60 hours playback under specified conditions |
| Battery Cycles | Not specified |
| Free Fall | Not specified |
| Repairability | No verified EU repairability class found |
Identifiers
| MPN | 4XD1S19778 |
|---|---|
| GTIN / EAN / UPC | 0195892122227 |
