Features: - GSM quad-band frequency. - Move alarm and SOS alarm. - Mini size, portable to carry with. - Low battery alarm, Geo-fence alarm. - Real time tracking by SMS/GPRS/ 3G WCDMA. - GPS and location based service, real-time tracking. - Track private cars / vehicle rental / equipment outside, etc. - Protect child / the elderly / the disabled / pet / property, etc. Specification: Size: 43.2X32 × 136mm Network standard: GSM / GPRS Communication frequency: N850 / 900/1800 / 1900Mhz Charging input: Input AC110-220V 50 / 60Hz Charging output: Ouput DC50V 500mA Battery: Chargeable changeable 3.7V500 mah Li- on battery Storage temperature: -40 ° + 85 ° C Working temperature: -20 ℃ + 55 ℃ Humidity range: 5% -95% non-condensing Package Included: 1 x GPS Tracker 1 x Charging Cable 1 x User Manual Notes: 1. Manual measuring, please allow 1 ~ 3mm error, thank you. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.