Kirisun are a major far-Eastern manufacturer of quality professional walkie-talkie radios and also vehicle (mobile) radios.
They also provide a range of accessories to go with them.
Kirisun supply the PT558 which is a PMR446, licence-free walkie-talkie radio.
PMR446 radios can only have ½ watt of output power, and must use a prescribed set of frequencies around 446MHz (hence the name of the standard "PMR446").
This means that PMR446 radios will have less of a range than the more powerful radios, which do require a licence.
Since all brands of PMR446 radios must use the same basic 8 channels, users are more likely to encounter "interference" from other PMR446 walkies nearby.
Legal use of any walkie-talkie radio sold and used in the UK, except for those that conform to the "PMR446" standard, requires the user to have some type of licence obtained from Ofcom.
Walkie-talkies that conform to the UK and EU standard for radios that can be bought and used by anyone with no requirement for an Ofcom Licence are called "PMR446" radios.
Kirisun supply the PT568 which is a full powered (4-5 watt) professional walkie-talkie.
It is available in two versions, UHF and VHF. For most users, the UHF version will be preferable.