Apple Inc unveiled a new watch, two larger iPhones and a mobile payments service on Tuesday as Chief Executive Officer Tim Cook seeks to revive the company’s reputation as a wellspring of innovation. Rival watch and wearable device makers are keeping a wary eye on Apple, which up-ended the music industry and drove once-dominant phone makers like Blackberry to the brink of extinction, and whose iPad helped shrink personal computer sales for a time before they recently recovered.