Buy with Confidence: With Monoprice's Lifetime Warranty on all Cables, you can rest assured we stand behind our products and our customers. Comprehensive Testing: Each cable length has been individually tested and certified to deliver the full 18Gbps bandwidth with a high level of EMI resistance. Dual Video Stream: This High Speed HDMI Cable supports the simultaneous delivery of dual video streams to a single display screen. The Monoprice's Certified Premium High Speed HDMI Cable Certified by HDMI Authorized Test Centers.