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国际前沿健康跟踪设备，应用智能云端与大数据技术，采用国际领先科技专注健康、随时随地，关注健康状态，可跟踪血氧，血压，心率，体温等多种功能的健康检测设备，你的关怀让家人随身携带，小巧轻便的体型、时尚简约

an app for tracker which can provide locations around it, the tracker usually is wore on a pet, and

an app for a watch which can provide locations and sound around it, the watch usually is wore on a p

AR cards are free, you could download from website: http://www.linktop.com.cn/ar/ar%20flash%20card.p