Features: 1.Tracking via SMS or GPRS 2.Current location report 4.Two-way conversation 5.SOS alert 6.Geo-fencing control 7.Low battery alert 8.Over speed alert 9.Removable and rechargeable internal battery 10.Built-in speaker and microphone 11.Alert when Track enter/exits GPS blind area 12.Live Voice monitoring 13.Vibrating alert 14.Without drift 15.Vehicle safeguard Specifications: *Chipset: MTK6223 + MTK 3326 *Frequency: GSM:900/1800/1900MH *GPS chipset: AGPS / GPS *Sensitivity: -159dBm *GPS frequency: L1 1575.42MHz *C/A decoding speed: 1.023MHz *Channels: 20 *Locating accuracy: 10 meters 2D RMS *Positioning accuracy: 0.1m/s *Time: Synchronized with GPS time *Preliminary data: WGS-84 *Built-in microphone and speaker *Powered by 1 * 3.7V 1480mAh battery (included) *Provides an easy way to track your target *Great for car, child, elder, pet tracking or other situation *Material: ABS + PC