Product parameters:Name: 8K HDMI 2.1 cableMaterial: Oxygen-free copper coreInterface: HDMI Type-ABandwidth: 48Gbps Support HDR/eARC Audio returnSpecification: 8K@120HZResolution: 7680*4320 backward compatibleVersion: HDMI 2.1Power supply: No external power supply required?EARC--Enhanced audio Echo Channel?ALLM--Automatic Low Latency Mode?QMS--Quick Media Switching?QFT--Fast Frame Transmission?VRR--Variable Refresh Rate