TBIT use support GPRS data transmission in the GSM network, the use of GSM network base stations cellID and the position of the GPS wristwatches for personnel, using watch mike and speaker built-in guardian and watches the wearers voice short message communication. According to the position and the guardian of the electronic fence watches, the guardian can receive when enter or leave the electronic fence watches area alarm.
Watch has a small size, beautiful appearance and high safety, high signal good cost performance.
"Continued use of GPS running in the background can dramatically decrease battery life."