The Poly Voyager 5200 monaural headset moves with you to meetings in and out of the office. Bluetooth headset for a mobile phone/smartphone Noise-cancelling microphone filters background noise WindSmart technology filters out disturbing wind and ambient noise Range: Up to 30 m Talk time: Up to 7 hours Standby time: Up to 9 days Charging time: Up to 90 minutes Weight: 20 g 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