Kinivo PRO Series Quick Reference Manual page 6

6. To Pair with Windows OS
a. Make sure your computer is Bluetooth enabled and supports
Bluetooth stereo (A2DP).
b. After putting the BTH240 headphones in pairing mode, right click
the Bluetooth tray icon then select 'Add a Device' from the context
menu. Under Windows, type "Add a Bluetooth device".
c. Locate the Kinivo BTH240 from the devices list and click the Next
button.
d. After your computer has loaded the device and the drivers for the
headphones, you should see that the device has successfully
connected. Continue by clicking Close on the Add a device window
and closing the second information window.
e. Right click the Volume control tray icon then select 'Playback
devices' from the context menu.
f. Select the Headphones (Bluetooth Hands-free Audio) and then click
'Set Default'.
g. Hit OK to close the window. The Kinivo BTH240 headphones should
now play audio from your computer.