GPS tracker Technical parameters: 1. GPS Chipset: SiRF star 2. GSM/GPRS module: MTK module 3. Frequency: Tri-band GSM900/1800/1900 4. Sensitivity: -159dBm 5. Cold start / hot start: 35s / 1s 6. Lithium battery: 3.7V 800mAh 7. Specifications Dimensions: 5.1 x 4.6x 1.7 cm