Watch is an M5Core watch set. In addition to being a powerful development hardware, the M5Core has a sophisticated look that gives it the possibility to wear smart. The kit is designed for the M5Core series,Compared with the old 3D printing base, the new model uses a mold, which has a qualitative improvement in appearance and quality. in addition to the cool strap. Also equipped with a 650mAh lithium battery, allowing users to have sufficient reliable endurance while using the device.