Plantronics CS50 900 Mhz Wireless Office Headset System w/ APU-7 USB Switch Cable 32120-20.Model Number: CS50Plantronics Part Number: 63120-20Includes- Charging Cradle- Microphone Earpiece- Over-the-Head Single side headset- Over-the-Ear Earloop- APU-7 USB Electronic Hook Switch Cable- AC/DC Power AdapterFeatures:Plantronics CS50/55 wireless headset systems combine the clarity of traditional corded technology with the mobility of wireless, so employees can move around the office to wherever business takes them—without interrupting or missing a call.Up to 300 ft. rangeEight hour continuous talk time, then recharge 80% in 1.5 hours, fully in 3 hoursConvertible headset can be worn on either ear and quickly converts between over-the-ear and over-the-head wearing.Behind-the-neck headband option available for extra stability during fast head movement.Noise-canceling microphone cuts 60-70% of background noisePrivacy of calls ensured with 64-bit digital encryptionAnswer and end calls when you're away from your desk (with optional handset lifter)900MHz frequency for clear, static free callsIntegrated busy lightSpecifications:Talk Time: Up to 8 hoursStandby Time: Up to 70 hoursRange: Up to 300 ftOperating Frequency: 900 MHz digitalSecurity/Privacy: Digitally encryptedHeadset Microphone: Noise-cancelingHeadset Weight: 26gHeadset Controls: Volume, Mute, Call Answer/EndBattery Type: Lithium Ion PolymerBattery Recharge Time: 1.5 hours (80%) / 3 hours (100%)Compatibility: Most office or PBX-based telephonesWearing styles: Convertible: over-the-ear, over-the-head, behind-the-head (with accessory neckband)