Introducing the barfly 4 mini its designed to mount smaller computers from garmin 200 500 510 520 joule cateye and coming soon bryton lezyne and pioneer computers also compatible with 310910920xt watches with qr mount perfect solution if youre after a more aerodynamic mount for your computer wind tunnel tested to be the fastest mount in the world it could save you over 8 seconds per 40km ensuring you can keep check on your time without weighing you down and compromising your n