Logitech Mobile Speakerphone P710e. Device type: Mobile phone, Product colour: Black, Windows operating systems supported: Windows 10, Windows 11, Windows 7, Windows 8, Windows 8.1, Windows Vista. Sensitivity: 85 dB, Frequency range: 140 - 16000 Hz. Microphone frequency: 50 - 8000 Hz, Microphone direction type: Omnidirectional. Connectivity technology: Wired & Wireless, Interface: USB/Bluetooth, Headphone connectivity: 3.5 mm. Power source type: Battery, Battery technology: Lithium Polymer (LiPo), Battery capacity: 1100 mAh