With the Apple Watch now getting to consumers and strapping onto their wrists, news is coming out that not only are there supply constraints that are hurting Apple Watch sales, but there is a major defect in the taptic engine of Watch.
The Wall Street Journal is running with the report, saying that the taptic engine - which causes the Watch to vibrate, or "tap" when users receive notifications or alerts, is experiencing problems. One of the two suppliers of this particular part has faulty hardware, and some of that faulty component has found its way into batches of Apple's Watch.
AAC Technologies Holdings, which is based in Shenzhen, China, has been making the taptic engines for Apple, but they've found that they "break down over time". This has forced Apple to throw away Watches that would've otherwise been okay, something that has caused availability times to bounce by a few months. Availability on the Apple Watch is now June for all models and configurations, which could be a result from the taptic engine issues.