Product prices and availability are accurate as of 2021-09-04 11:32:48 UTC and are subject to change. Any price and availability information displayed on https://www.amazon.com/ at the time of purchase will apply to the purchase of this product.
CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON SERVICES LLC. THIS CONTENT IS PROVIDED 'AS IS' AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.
Base station positioning
Mobile client-side or computer GPRS service platform, the dual control mode
Real time GPRS positioning, tracking and monitoring
Phone book(for contact)
Intercom(Push to talk),SIM card needed