Shenzhen Yushengchang Technology Co., Ltd.  is a leading manufacture in Shenzhen which specialized in range of  Kids GPS Tracker watch , Senior GPS tracker watch , Personal GPS tracker , Pets , Automotive and Vehicle GPS tracker ;Smart watch phone and smart bluetooth bracelet ...etc, supplying for over 7 years Established in Mar.2013, good quality and professional service helps us gain many good reputation overseas .OEM /ODM is warmly welcome! House Call was yesterday: GPS tracker connects families smart anytime anywhere, real time and real Googlemap minitoring easy. Without social media ,without any subscription nor service fee.