Sennheiser SP 20 Speakerphone USB + 3.5 mm

Specification :

• Talk time - Up to 20 hours
• Charging time - 2 h 30 min
• Standby time - Up to 30 hours
• Weight - 7.35 oz
• Dimensions - 4.33 x 1.18 in
• USB - Version 2.0
• Connectivity - PC via USB; Tablet and mobile phone via 3.5 mm jack cable*
• Supported operating systems - Windows and Mac
• Microphone type - Omni Electret Condenser Microphone
• Frequency response - 150-6.800 Hz
• Microphone coverage - 360 degrees
• Speaker type - Dynamic, neodymium magnet
• Frequency response - 150-15.000 Hz
• Audio performance - Dynamic equalizer for communication and music mode for optimized audio performance. Full duplex audio and echo cancellation for communication.
• Warranty - 2 years