Yamaha TSR-7790BL 7.2CH Network A/V Receiver with Wi-Fi & Bluetooth (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 1 year manufacturer warranty 7.2-channel surround sound Bluetooth for wireless music streaming and Compressed Music Enhancer for Bluetooth Built-in Wi-Fi and Wireless Direct HDMI 2.0a: 4K Ultra HD video upscaling with HDCP 2.2 and high dynamic range (HDR) support