USA 
CS540 Spare Wireless Headset
Product Description
The Plantronics CS540 Spare Wireless Headset is a replacement/spare headset for the Plantronics CS540 wireless headset system. It includes a battery, which affords up to seven hours of talk time. The monaural headset features a noise-cancelling microphone, DECT technology and wireless range of up to 328'. Please note that this headset requires the CS540 cradle in order to charge.
| Headset Features | Noise Cancellation |
| Boom Rotation | |
| Microphone Distortion | |
| Microphone Design | |
| Microphone Frequency Response | |
| Microphone Sensitivity | |
| Impedance | |
| Pickup Pattern | |
| Speaker | |
| Driver Size | |
| Cushion | |
| Earpiece Design | In-Ear |
| Listening Mode | Monaural |
| Speaker Frequency Response | |
| Speaker Sensitivity | |
| Impedance | |
| Speaker Distortion | |
| Maximum Sound Pressure Level (SPL) | |
| Connectivity | |
| Wireless Range | 328' / 100 m |
| Hands Free Profile Version | |
| A2DP Profile Version | |
| Power | |
| Rated Power | |
| Capacity (mAh) | |
| Battery Chemistry | |
| Standby Time | |
| Talk Time | 7 Hours |
| Operating Temperature | |
| Storage Temperature | |
| Operating Humidity | |
| General | |
| NFC | |
| Wearing Style | Ear Hook, Over-the-Head |
| Frequency Mode | |
| Encryption Bit Depth | |
| Certifications | |
| Physical | |
| Ear Pad Size | |
| Cable Length | |
| Dimensions | |
| Weight | 0.7 oz / 19.8 g (Headset) |
| Warranty Length |