Sennheiser SD Office Wireless Phone Headset Type: Headset Specifications: Frequency Response (microphone) Wideband Mode: 150 Hz - 6.8 Khz Frequency Response (microphone) Narrowband Mode: 300 Hz - 3.5 Khz Frequency Response (headphones) Wideband Mode: 150 Hz - 6.8 Khz Frequency Response (headphones) Narrowband Mode: 300 Hz - 3.5 Khz Charging Time 0 - 50%: 20 Minutes Charging Time 0 - 100%: 1 Hour Standby Time: Up To 100 Hours Range Line Of Sight: 590 Ft Range In Typical Office Building: 180 Ft Talk Time Wideband Mode: Up To 8 Hours Talk Time Narrowband Mode: Up To 12 Hours Battery Type: Lithium Polymer Speaker Type: Neodynium Magnet Speaker Parts: 2 Year Labor: 2 Year
