Ugreen Group via Amazon offers the Ugreen USB Bluetooth 4.0 Adapter in Black or White for $8.99. Coupon code "PXW7B7DY" cuts the price to $5.93. Plus, Prime members receive free shipping. That's the lowest price we could find by $6. It connects to your Windows PC to pair Bluetooth headsets, headphones, speakers, mice, keyboards, and other peripherals.