Wei-Meng Lee 
Learning WatchKit Programming 
A Hands-On Guide to Creating watchOS 2 Applications

Create Breakthrough Apple Watch Apps with the New watch OS 2 and the Updated Watch Kit Framework! Apple Watch is improving quickly: Using Apple’s new watch OS 2 operating system and the updated Watch Kit framework, you can create tomorrow’s hottest wearable apps. Learning Watch Kit Programming, Second Edition, will help you master these technologies and gain the same "early mover" advantage that early i Phone developers enjoyed. Leading i OS development trainer and author Wei-Meng Lee guides you step by step through architecting, designing, and building cutting-edge Apple Watch apps. You’ll learn how to make the most of the newest platform improvements, including direct programmatic access to key hardware features; support for new Watch Connectivity Framework APIs; and new ways to use location, consume web services, and persist data.