The MicroPLB™ is the smallest and lightest weight PLB in the world and has been in use by US Government Agencies for over 10 years. Others falsely claim to be the smallest and lightest, but one only needs to compare the actual weight and dimensions to ascertain the truth. If you're interested in the best for your people at a reasonable price, then the MicroPLB is the unit for you.
There are four types of MicroPLB's certified by the international C/S (COSPAS SARSAT) consortium, including standard units certified for the C/S required 24 hour minimum operating time, and extended life units certified for 48 hours minimum operating time. Some types have internal GPS receivers, while others accept data from external (user supplied) GPS receivers.
The GPRS (Global Personnel Recovery System) "Card" is a
miniature ("fat credit card" size), light weight, high efficiency (long battery life) satellite
communications transceiver "engine" common to all next generation end user equipment.
GPRS is a joint Civil/DoD initiative to develop and deploy the first global, near real-time two-way communications
and tracking system capable of fully supporting Joint Blue Force Situation Awareness (JBFSA) and Personnel Recovery
(PR) / Search-And-Rescue (SAR) operations among many other world-wide applications. It is seamlessly interoperable
across agencies, with two dozen separate government agencies already involved (including our allies in the United
Kingdom), and enables the emergency communications desperately needed today by disadvantaged isolated personnel such
as downed pilots, dismounted soldiers, and other personnel often in hostile and/or dangerous situations on remote
parts of the earth.