LONGER SERVICE LIFE - Improved design and high-quality materials increase service life. Tangle-free nylon braided fiber material, strong and wear-resistant, make CUGUNU iPhone charger cable more durable and flexible than ordinary iPhone cable. Reinforced stress points designed to withstand 15000+ cycles of flex test without inner failure. FAST CHARGING - Apple certified built-in terminal and smart chip ensure your Apple devices are charged safely at their fastest possible speed. High-quality four-core copper wires support a maximum charging speed up to 2.1A and data transmission at speeds of up to 480Mbps. Apple MFi CERTIFICATION - MFi (made for iPhone iPod iPad) certified lightning cord ensures 100% data synchronization and charging compatibility with any Apple device that uses a Lightning port. Apple certified chip promise no warning message pops up, ensures the safety of your Apple devices even at their fastest charging speed. FULL COMPATIBILITY - Apple MFi Certified en