Logitech M720 Triathlon Multi Device Wireless Mouse Black Evolution X 2 with USB C Adapter Wireless FW1697DRXXMBML 3PCCEJ 2 with USB C Adapter Wireless Range Up to 30 m Speaker Size 28 mm Speaker Frequency Range (Music Mode) 20 Hz – 20 kHz Active Noise Cancellation Hybrid ANC Microphone Type Noise Cancelling Microphone Array Number of Microphones 6 Battery Talk Time Up to 20 hours (with ANC & Busylight: up to 15 hours) Battery Music Playback Up to 32 hours (with ANC: up to 21 hours) Charging Time Up to 120 minutes (fast charge: 30 min for 10 hours talk time) Wireless Charging Supported Weight Approx and OFDMA technologies enhance network efficiency and security Powered by a single user replaceable AA battery and a tilt capable Hyper Fast Scroll Wheel that switches instantly between free spinning and precision click to click ratcheted modes