The Mini A8 GSM/GPRS Tracker has high sensitivity and clear sound, making it perfect for global location tracking. It features an automatic alarm and remote control settings, and can detect movement within a range of 4-5 meters. It is small in size, making it easy to use and carry around. The tracker can be charged using the included USB cable and has a rechargeable 3.7V 500mah Li-ion battery. This device is ideal for pet tracking, elderly care, children tracking, and more. Features: - The highest sensitivity in the range of 4-5 meters. - When the body is near, it will automatically start the alarm. - Connectivity can listen to a location within 15 meters of the situation, the sound is very clear. - Put the alarm cat or paste in a certain height, away from the body within five meters within the angular range 120 degree left and right, as long as people or animal, swaying back and forth in a very short time, induction start. Remote-control setting: A. Send "0000"to the SIM card number after a successful turn off this feature. B. Send"1111"is open induction. 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 Includes: 1 x Mini Global Tracker(with Built-in 3.7V 500mah Li - ion Battery) 1 x USB 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.