1.GPS and GSM/GPRS module built in
2.  32 parallel channels GPS receiver
3. 900/1800MHz(850/1900MHz Optional)
4. Built in high sensitive antenna, no external antennae needed
5.Acquisition Time:Time To First Fix (TTFF) Hot 1sec,? Warm 38sec,Cold<45sec
6. Positioning Accuracy : Less than 10 meters
7. Operation Time:: up to 7 days  after fully charged,in standby mode
"8,Operating Temperature: -30oC to + 70oC,
  Storage Temperature: -40oC to + 85oC; "
9. Power supply : DC 5V mini USB,built in 900mAh lithium battery
10.Emergency Alert: SOS Button, 2 ways communication