The noise-cancelling Poly Savi 8200 series headset is ideal for use in noisy workspaces. Other features: Monaural DECT headset for desk phones, PC/notebook and mobile phone/smartphone Three different wearing styles: Ear hook, neckband and headband Noise-cancelling microphone filters background noise Replaceable battery for unlimited talk time SoundGuard DIGITAL: Protects against sound levels above 118 dBA; G616 anti-startle (during calls) detects and eliminates any large sudden increase in signal level Hot swappable battery gives users the opportunity to charge a second battery and swap them during a call. Unlimited talk and standby time. Range: Up to 180 m (line of sight), up to 55 m (typical office range) Charging time: 3 hours Calls can be answered/ended through the headset: manufacturer-specific Electronic Hook Switch (EHS) module required (sold separately). Please inform us of your phone model so that we can find the compatible EHS cable. Please note: We recommend using Poly Lens software with this product. This enables central management of video devices, headsets, phones and webcams. Other benefits: - Custom device settings - Always the latest firmware - Easy troubleshooting tool - Fast device integration - Dashboard layout with intelligent news feed