The H4855 Personal Role Radio (PRR) is a small UHF transmitter-receiver issued to the British Armed Forces. It is used by the British Army, Royal Marines, Royal Navy and the Royal Air Force Regiment. The radio has a range of 500 meters, weighs 1.5 Kilograms, has 256 different radio channels and a battery life of 20 hours continuous use which allows users to communicate over short distances. Effective even through thick cover or the walls of buildings, PRR is issued to every member of an eight-strong infantry section.[1] It is manufactured by Marconi-Selenia Communications (then Selenia Communications, now SELEX ELSAG, Davies Communications Division). The PRR was originally part of the wider Bowman radio project but was hived off in October 1999 for more rapid implementation, and the first of 45,000 units formally entered service in early 2002. Operating in the 2.4 GHz band, PRR has no integrated encryption devices and does not intercommunicate with the rest of the Bowman network, but is widely acclaimed as having revolutionised intra-squad communications and small-unit tactics.