The JEM77B, also known as the JEM77B RMR or the JEM77 Rock Mirror, is a JEM series solid body electric guitar model introduced by Ibanez in 2005. It is a signature model of American guitarist Steve Vai. It was made in Japan by FujiGen.
The JEM77B features an American basswood body with a mirror finish bolted to a maple and walnut neck with a 24-fret rosewood fingerboard with pearl dot position markers. Components include DiMarzio Breed pickups mounted in a mirror pickguard with a pair of humbuckers flanking a single-coil, an Edge Pro double locking tremolo bridge and Gotoh tuning machines.