Trust the cable labeled!
The Premium HDMI™ Cable Certification Program is the program of the designers of HDMI technology. It includes both additional and in-depth cable testing and an authentication and verification program. The premium certified cables are tested to make sure they support the full 18 Gbps bandwidth of the HDMI 2.0b specification, plus an EMI test to make sure the cables minimize interference with wireless signals. The cable has a length of 3 meters.