This high-quality 8K HDMI 2.1 extension cable supports dynamic HDR, variable refresh rate, and 48 Gbps transmission speed, providing an immersive cinema-grade visual experience with up to 8K resolution and 144Hz refresh rate, while also delivering high-quality sound with multiple audio streams and automatic synchronization. With mirror mode and extended mode capabilities, it allows for versatile screen usage and multitasking. Additionally, its durable construction, including gold-plated connectors and three-layer shielding, ensures signal integrity and prevents interference. Compatible with HDMI 2.1 standard and backward compatible with previous versions, it can be used with various devices such as TVs, computers, projectors, PS3, and set-top boxes.