Calling function: GSM quad-band two-way call
Intercom: Real-time voice conversation
Positioning: LBS+GPS
Green firewall: filter unfamiliar numbers and messages
Remote shutdown: prevent malicious shutdown
Watch alarm clock: three sets of watch alarm clock
1601, Block A, Liutang Business Building, 21 Qianjin Second Road, Xixiang Street, Baoan District, Shenzhen, China