NB-IoT low power standby time for one month GPS/WIFI multi-mode positioning, keep track of pet status Sports data monitoring, AI health management advice IP67 waterproof grade, support rain/swimming environment With its own friend sensor, it is easier to ask pets for a walk Small size and strong function, easy for pets to wear Electronic fence, message reminds two security guard guarantees Pet movement route tracking, more historical trajectories Beautiful and fashionable, a variety of color options Short-range Bluetooth search, easier to locate and search 860mAh large capacity, multi-mode switching standby for longer Size is 5. 4x4. 0x1. 5cm Quality is 30g Material: ABS material / acrylic / silicone Battery capacity: 860mAh