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。
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。
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