Connectors:

• Connector A: HDMI® Type A Male
• Connector B: HDMI® Type A Female
• Housing Material: PVC
• Connector Plating: Gold
• Pin Construction: Copper Alloy
• Pin Plating: Gold
• Dimensions (approx.) WxDxH: M: 19.5x35.0x11.0mm (0.75x1.38x0.43in)  
• F: 20.5x35.0x11.0 (0.81x1.38x0.43in)       

Cable construction:

• Length: 3m (9.841ft)
• Standard: HDMI®
• Colour: Black
• Type: Round
• Jacket Diameter: 7.0mm (0.28n)
• Jacket Material: PVC
• Conductor Material: Bare Copper
• Conductor Gauge: 28AWG
• Shielding: Aluminium Magnesium Alloy 85%

Specifications:

• Supported Bandwidth: 18Gbps
• Maximum Resolution: 4096x2160@60Hz 4:4:4 8bit
• Nominal Attenuation: 1.35GHz > -5.5dB (HBR1)                
• 2.7GHz > -8.5dB (HBR2)
• 4.05GHz > -11.0dB (HBR3)
• Minimum Bend Radius: 70mm (2.76in)
• Operating Temperature: -10°C - 80°C (14°F - 176°F)
• Storage Temperature: -20°C - 85°C (-4°F - 185°F) 

Miscellaneous:

• Packaging Type: Polybag
• Warranty (Years): 10
• Certificated: RoHS, REACH, CP65, UL  

https://www.lindy.co.uk/cables-adapters-c1/audio-video-cables-c107/3m-high-speed-hdmi-extension-cable-anthra-line-p13228/s13388?cid=GBP&glCurrency=GBP&glCountry=GB