One-step Auto Connection: The Bluetooth headset with microphone for PC is designed with a physical on/off toggle switch for power, instead of holding down a button for several seconds to turn the wireless headset with mic on/off. No more holding down buttons trying to find the red blinking light. Just toggle the switch, and it will immediately pair your device after connecting the first time- no hassles at allPlug & Play: Bluetooth headset with mic comes with a USB dongle for computers without Bluetooth or in case you're not allowed to connect via Bluetooth. The setup is exquisitely easy using the USB adapter. No need to download any programs or go through any complicated setup. Simply plug the USB connector into your computer, and you're ready to talk or listenDisclaimer: Liquidation/return stock - may be untested, missing parts, or show wear. Only items shown/listed are included; review photos first. Warranty, completeness, and function are not guaranteed unless stated.