Its a dial up booster, you can set it to anything u want to (if some dickhead at the lights pisses u off, wind it up ) have a look at the front-on pic.
Holds boost perfectly. The only time it will spike is when u first boot it, eg. I set it to .4bar, dropped it into 2nd, floored it and it flashed .4, .5, .4, .5, .4 really quickly and then held .4, but even AVC-R's do that.
Will ship anywhere, but buyer pays postage.