Mini GPS Tracker to protect seals returned to the ocean Aquarium staff plans to choose two two year old pups released into the Bohai Gulf, in order to make them safe and smoothly find a seal colony, staff will be Mini GPS Tracker in them, at any time...

Product features: High precision: due to the sensor precision error is less than 0.5%, wide range, so the system terminal error is small. Continuous 24 hours driving fuel consumption curve is nearly linear, the electrocardiogram (ecg) type zigzag curve,...