A leaked picture from famed leaker Evan Blass (@evleaks in Twitter) posted Microsoft Moonraker, a Nokia-designed Windows Phone wearable which never quite made it to production, likely because Microsoft chose to focus on the Microsoft Band.
While the Moonraker carries the familiar look and feel of Nokia Windows Phone devices , it seems like a sporty and fun wearable which features as pretty high-res display. A second image shows some of the UX and apps that were expected to run on the device. The images do look quite polished and cohesive for a mockup device.
Source: Evan Blass via Twitter