Plantronics Voyager 4320-M Sizetereo Bluetooth Headset (218475-02)

Wireless Connectivity Class 1 Bluetooth® v5.2 - Multipoint Connectivity, Connects to Two Devices at a Time - Remembers Up to 8 Devices - Up to 164 Feet Wireless Range Acoustic Fence Technology - Creates A Virtual Noise-free Bubble In Front of Speaker's Mouth - Ensures Crystal-clear Conversations SoundGuard DIGITAL (Hearing Protection)-Prevents Average Daily Noise Exposure from Exceeding 85dBA Relaxing Design - Relaxing Padded Headband - Flexible Microphone Dynamic EQ optimized - For PC Wideband Voice Telephony Up to 7 kHz or For Multimedia 20 Hz to 20 kHz Fast Charging - 10 Hours of Listening Time in 15 Minutes of Charge - Battery Life Can Be Extended Using Cord, With Audio Over USB Mode Easy Access Mute Button Battery: - Battery Capacity: 350mAh - Battery Type: lithium ion - Talk time: Up to 24h(When Used With BT700 USB Adapter) Clear Dual LED Indicators - Shows In-a-Call Status