1. Real-time tracking. 2. Speeding/low power alarm. 3. Movement alarm. 4. Into/out off Geo-fence alarm. 5. Waterproof IP67. 6. Roll call position. 7. Save power and GPRS. 8. SMS mode long standby 12 days. 9. AGPS function,receive GPS signals faster. 10.Built-in storage memory,Blind area data upload. 11.APP set.