USA 
H540 USB Headset
Product Description
The Logitech H540 USB Headset features a lightweight, flexible headband and USB plug-and-play connectivity. It's equipped with on-ear volume and mute controls, a mute indicator light and a built-in EQ. For added convenience, the headset is compatible with both Windows and Mac OS. Plus, it works with common calling applications as well, which includes Skype, Gmail Voice and Video Chat, Yahoo! Messenger and Windows Live Messenger.
| Item Type | |
| Number of Included Headphones/Receivers | |
| Number of Included Transmitters | |
| Number of Included Headsets | |
| Number of Included Transceivers | |
| Headphone | |
| Earpiece Design | |
| Earpiece Swivel | |
| Earpiece Connection / Wearing Style | |
| Foldable | |
| Number of Earpieces | Dual Earpiece |
| Sound Field | |
| Earpad Size | |
| Driver Type | |
| Number of Drivers | |
| Driver Size | |
| Diaphragm | |
| Magnet Type | |
| Voice Coil | |
| Impedance | |
| Active Noise Cancellation | |
| Controls/Microphone Location | |
| Full Remote OS Support | |
| Sensors | |
| Contact Pressure | |
| Frequency Response | |
| Resonant Frequency | |
| Sensitivity | |
| Matching Tolerance | |
| Maximum Sound Pressure Level (SPL) | |
| Maximum Power Handling | |
| Functional Bias Voltage | |
| Electrostatic Capacitance | |
| Output Power | |
| Volume Limiting | |
| Noise Attenuation | |
| Total Harmonic Distortion (THD) | |
| SNR | |
| CMRR | |
| Channel Separation | |
| Storage Capacity | |
| Number of Mics | |
| Beamforming Support | |
| Type | |
| Diaphragm Size | |
| Mic Boom Location | |
| Pickup Pattern | |
| Noise Canceling | |
| Frequency Response | |
| Operating Voltage | |
| Sensitivity | |
| Maximum SPL | |
| Impedance | |
| SNR | |
| Distortion | |
| Equivalent Noise Level | |
| Wireless Transmission | |
| Number of RF Channels | |
| RF Bandwidth | |
| Max Systems per Setup | |
| Wireless Modulation | |
| DECT Standard | |
| Duplex Mode | |
| RF Channel Access Method | |
| Latency | |
| Speech Encoding | |
| Transmission Speed | |
| Approximate RF Sensitivity | |
| Supported Audio Codecs | |
| Bluetooth Profiles | |
| Bluetooth | |
| Bluetooth Power Class | |
| Wireless Range | |
| Frequency | |
| Transmitter Power | |
| Multipoint Support | |
| Maximum Paired Devices | |
| NFC | |
| Wireless Chipset | |
| True Wireless Pairing Method | |
| Transmitter Host Connection | |
| Encryption | |
| Wired Connectivity | |
| Audio Connector to Source | USB Type-A |
| Connector Plating | |
| Adapter (Included) | |
| Cable Design | |
| Audio Connector to Earpiece | |
| Cable Length | |
| Cable Length | |
| Cable Color | |
| Cable Conductor Material | |
| Battery Type | |
| Battery Type | |
| Battery Chemistry | |
| Battery Chemistry | |
| Capacity (mAh) | |
| Runtime | |
| Runtime | |
| Quick Charging Times | |
| Recharge Time | |
| DC Input Power | |
| Wireless Charging | |
| Charging Port | |
| Charging Cable Length | |
| Number of Channels | |
| Users per System | |
| I/O Connectors | |
| Antenna | |
| Audio Decoding | |
| Number of Charging Ports | |
| AC/DC Power Adapter | |
| AC Input Power | |
| Power Consumption | |
| Additional Runtime | |
| Battery Chemistry | |
| Capacity | |
| Charging Time | |
| Charging Interface | |
| Compatibility | |
| Platform Support | |
| OS Compatibility | Windows macOS |
| Required Hardware | USB Port |
| Internet Connection | |
| Charging Temperature | |
| Operating Temperature | |
| Storage Temperature | |
| Operating Humidity | |
| Storage Humidity | |
| Certifications | |
| Color | |
| Water Resistance | |
| IP Rating | |
| LED Indicator | |
| Material of Construction | |
| Dimensions | |
| Weight | |
| Warranty Length |