In line with speed and distance is the smartest feature of a sports watch - GPS tracking.
符合速度和距离是最聪明的特征，运动手表，GPS跟踪。
The tracking system has the feature of simple structure, small size and steady property and has been applied successfully in the production line.
该跟踪器具有结构简单、体积小、性能稳定等特点，在生产线上获得了成功的应用。
应用推荐