Features: -Equipped with a high-sensitivity intelligent tracking chip, the overall performance of the tracker is improved to ensure accurate and reliable tracking. -With the security fence function, it sends real-time alerts whenever the tracked object enters or leaves the designated area. -It provides up to 180 days of unlimited tracking history playback, with this feature you can view the movement of the tracked object anytime and anywhere and get a comprehensive record of its whereabouts. -It can be used for a variety of tracking purposes, from vehicles to children, the elderly, vulnerable relatives, people with disabilities and even pets, ensuring their safety and locating them quickly when needed. -Built-in magnet, no hand tools are required, and it can be easily attached to metal surfaces. Note: GF10 is an LBS base station positioning, relying on nearby signal towers to obtain location information, there will be a certain positioning error distance. Specification: Communication frequency band: 850/900/1800/1900 MHz Operating voltage: DC 3.3V-4.2V Operating temperature: -40℃~+80℃ Charging voltage: DC 5V Material: ABS Color: black Size: 4.1*1.4cm Battery capacity: 300mAh