This electronic height gauge is a portable device for precise height measurement, featuring three core advantages: dual-mode accurate height measurement, waterproof & durable performance, and portable & easy operation.Adopting air pressure sensing and GPS calibration technology, it ensures high measurement accuracy and strong anti-interference capability. It supports both altitude and relative height measurement, and its IP67 protection rating enables it to adapt to harsh outdoor environments. Compact, lightweight and easy to carry, it is widely used for height measurement in fields such as mountaineering, surveying and mapping, and aviation.