ALL Kinds of 4G NB Vehicle GPS tracker, there must be one which should meet your expectation.
The shell of ES811-C1, ES811-C4, ES811-CM and ES402 are already waterproofed, the rest types can all be updated to waterproof version.
ES821,ES826,ES420,ES421,ES431, ES430
Technical support:
Get professional and experienced engineers to support with activation, installation, configuration, intergration, troubleshooting and more.
Customization:
Products can be developed as required including appearance, size, software, firmware and sensors etc.