Patuoxun via Amazon offers the Mpow Knight Wireless Bluetooth 4.0 Headset with Charging Dock, model no. BD47-PTX-1, for $36.99. Coupon code "KNIGMPOW" cuts it to $25.99. With free shipping, that's a buck under our May mention, $34 off list price, and the lowest total price we've seen. It features Bluetooth 4.0 and a built-in CSR intelligent noise reduction chip.