Hi Carole,
Your DU7200 TV is Bluetooth enabled and can connect to compatible devices such as speakers, headsets, keyboards, and mice.
To pair an external device via Bluetooth: Go to Home > left directional key > Settings > Bluetooth. If your device isn’t detected, try moving it closer to the TV and select Refresh to re-scan for available devices.
If you need further assistance connecting a Bluetooth device, please contact Samsung Customer Support at 1-800-SAMSUNG, 8AM – 12AM EST, 7 days a week. LiveChat agents are also available by clicking the ‘Support’ link on our website.
~ Samsung Advisor