Eelink GPT09 is a Standalone GPS tracker for GPS asset tracking with 4 magnets and fixing plastic cover IP67 (Waterproof GPS). GPT09 sends GPS positioning data through GPRS to a Tracking Management Platform and can change positions intervals 6/12/24 time or 48 hours, depending on your needs. Eelink GPT09 has an internal battery 14500mAh can last up to 3 years with a one-day GPS position, ideal for GPS tracking high-value assets where no GPS location in real-time is needed.