Key is an ultra portable iPhone charging cable. Keep it on your key-chain and always have a backup Lightning cable. Designed for emergencies or for the minimalist traveler. Specifications Materials Dow Dupont polycarbonate frame TPE rubber middle section Technical 2.4A capable USB 2.0 6.6cm x 0.5cm x 1.9cm Intended use Designed to be an emergency/mobile tool. Though its flexible center allows it to work in nearly any situation, it is not a reasonable replacement for our Lightning cable. Should I be worried about the exposed connectors? No. The USB connector is housed in a robust metal jacket, so you cannot scratch the gold contacts. The Apple Lightning connector is made from very robust materials and will not scratch either.