This instrument is a Traveler Guitar Ultra-Light Bass, an extremely compact acoustic-electric travel bass designed for portability without sacrificing a full playing scale.
The Ultra-Light series is famous for its "headless" design, which significantly reduces the instrument's overall length.
Proprietary In-Body Tuning: To eliminate the headstock, the tuning machines are relocated into the body of the guitar. You can use standard bass strings with this system.
Materials: It features a one-piece neck-through-body design made from Eastern American Hard Maple.
Fingerboard: Depending on the specific year/sub-model, it typically has either a Maple, Rosewood, or Black Walnut fretboard with 22 medium frets.
Ergonomics: It includes a removable metal lap-rest (visible in your second photo) that can be detached to fit the bass into its slim gig bag, as well as a built-in thumb rest.
Despite its small size, it is designed to feel like a "real" instrument.
Scale Length: It has a 30-inch short scale, which makes it roughly 25% shorter than a standard full-size bass.
Total Length: Approximately 33.75 inches, allowing it to fit easily in airline overhead compartments.
Weight: It is incredibly light, weighing only about 3 lbs 7 oz.
Electronics: It uses a Shadow under-saddle piezo pickup with passive electronics and a standard 1/4-inch output jack. It does not require batteries.
Portability: This bass is highly popular with touring musicians and airline pilots because it is 61% lighter than a typical bass while maintaining a standard playing feel.
Estimated Value: These currently retail new for approximately $399.99.