1-7/8" tall brass case w/inset glow-in-the-dark dial that has numerals for use in conjunction w/small brass pointer that lifts up. Also includes inset compass on front while back is silver luster meant to serve as a signaling device. Does not carry Armstrong name, but this version was offered by his show in 1948. Sun Watch is essentially Mint as issued. Also included is the original shipping mailer and instruction booklet which are VF.