The CX models 1, 2, 3, 5, and 7 total stations have the ability to accurately measure distances up to 500 m, even on reflective surfaces. It comes equipped with a TS shield for remote security and a rugged, metal chassis for an IP66 dustproof and waterproof rating. The models also can use Magnet Software solutions while using an external data connector. Each comes with 36-hr. battery life and USB port. Sokkia. 800-476-5542.