CS540 Wireless DECT Headset - One-Ear Hadset (Mono) - Convertible (3 Wears) - Connects to Landline Phone - Noise-Canceling Microphone

Longer range and longer talk time: Adaptive power optimizes range and talk time by automatically switching down to low power mode when the headset is near the base. SoundGuard Technology: SoundGuard acoustic containment technology protects against acoustic shocks by limiting the volume to below 118 dBA for listening comfort and protection against clipping. Excellent sound quality: Choose from professional narrowband or wideband audio quality: Narrowband mode maximizes talk time, while wideband mode boosts call quality. Maximum Security: The CS540 headset features DECTTM technology, which provides better audio quality, eliminates interference from Wi-Fi networks, and ensures the safety of your calls. One-touch remote control: The Poly HL10 handset lifter is compatible with the CS540 wireless headset and allows you to answer incoming landline calls at the touch of a button.