4-string · Bolt-on
Vintage-style JJ 4-string Jazz bass: swamp-ash body, Canadian hard-maple bolt-on neck, maple fretboard, 20 frets, 34" scale, Swing JJ4 pickups with a JX 2-band active preamp, Swing Vintage bridge and tuners. Made in South Korea by Swing (Swing Guitar Technology), Paju.
| Construction | Bolt-on |
| Strings | 4 |
| Body | Swamp ash |
| Neck | Canadian hard maple |
| Fingerboard | Maple |
| Neck Pickup | Swing JJ4 Set |
| Bridge Pickup | Swing JJ4 Set |
| Controls | Active: Swing JX 2-band preamp |
| Bridge | Swing Vintage Bridge |
| Made In | South Korea |