Gems 12ft HDMI Cable High-Speed Supports 4K, Ethernet, 3D and Audio Return HIGH DEFINITION RESOLUTION: Our HDMI cables provide ultra-fast transfer speeds to delivery crystal clear 1080p, 1440p, 3-D or 4K resolution. SHARED CONNECTIONS: Each Gem cable features a built-in Ethernet channel for stable shared internet connections between HDMI devices. SHIELDED DURABILITY: Great for home, business or event use, our cables are fully shielded, heavy-duty gauge to prevent signal degradation or signal loss. EXTENDED LENGTH: Gems cables are 12 ft. in length to give you more flexibility and convenience while installing equipment. SATISFACTION GUARANTEED: Gems HDMI cables are backed by a 30-day money back satisfaction guarantee. Let us know if you have problems or concerns and well be happy to issue you a refund.