What's the difference between AppleCare+ and AppleCare One?

AppleCare+ protects one device per plan, providing unlimited accidental-damage repairs, 24/7 priority support, battery replacement at 80% health, theft or loss coverage (two claims annually), optional express replacement, and service fees of $29 for screen glass and $149 for loss. AppleCare One offers the same benefits for up to three devices for $20 per month, allows additional devices at $6 each, is available only in the US, UK, France, Germany, and Australia, and requires devices to be four years old or newer (headphones one year).