Features: This RJ12 to RJ12 copper spring coil telephone cable delivers clear voice transmission with gold plated 4P4C connectors, ensuring minimal signals loss and anti oxidation durability for uninterrupted communication. Engineered with a stretchable spring, the cable automatically retracts while maintaining structural integrity through repeated stretching cycles. Ideal for home users, office professional, and technical supports teams requiring voice communication across landline phones, and equipment with standard RJ12 ports. Optimize workspaces efficiency in offices, corporate environments, and customer centers where frequent device repositioning demands extended reach handset connectivity. Combines industrial grade copper conductors with gold contact to create solution for voice signals preservation across temperature fluctuations and daily wear scenarios. Specifications: [Component]: Copper, PVC [Size]: 200cm(78.74in), 250cm(98.42in), 300cm(118.11in), 350cm(137.8in) Package Includes: 2pcs Extension Cable note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.