Sonim phones are professional power tools of communication that thrive on the construction site: crush, puncture, scratch and impact proof (including 2 meter drops onto concrete), they are also water submersible and completely impervious to dust, resulting in low return rates, 3+ year in-service life and low total cost of ownership. The high volume speakers, noise canceling microphone, outdoor viewable display, bright LED torch and keypad designed for gloved use provide real world usability. Sonim's construction industry solutions include (network dependent) push-to-talk, lone worker/man-down safety protection and real time reporting with Notevault, that eliminates client-contractor disputes by capturing verbal, visal and GPS information right from the job itself.