For those who work in high intensity environments or maybe just need an extra level of security, this may be the phone fo you. The Sonim XP3, a phone well known to take a serious beating and keep chugging along, is releasing the new "Sentinel" variant for those who live and work in dangerous areas.

The phone has three special emergency buttons which are linked to a monitoring service. The red button sends an emergency signal to the monitors with GPS location for help and pings every three minutes until found or destroyed. The yellow button requests enhanced tracking with the user having to check in every ten minutes or emergency services will be called. Green just alerts the monitoring center the phone is in use.

Bob Plaschke, chief executive of Sonim Technologies, stated in a press release: "No matter how harsh the situation, the Sonim XP3 Sentinel is the ultimate safety phone for lone workers in extreme environments. Featuring high performance GPS, dedicated emergency alarm buttons, and a 'man-down' motion sensor that can detect impact, tilt, free fall, and no-movement, the Sonim XP3 Sentinel has been configured to work hand-in-glove with the advanced 24x7 monitoring services of our partners."