Best for: Open Office / Hybrid Worker • 4-Mic for Hybrid ANC • DECT & Bluetooth Hybrid Wireless Technology • 4-Mic Noise Cancellation&Acoustic Shield Technology 3.0 • All-Day-Wearing Comfort • Compatible with various manufacturers' phones and UC platforms • Up to 185m/606ft Wireless Range • Built-in Busylight and External Busylight (Optional) • Talk Time DECT Mode: Up to 16 Hours; Bluetooth Mode: Up to 32 Hours