Casio CGW 500] ''Cosmo phase'' (1985) . It's oval-shaped LCD displays not only all nine planets and their orbit around the sun, but also the orbit of Halley's Comet which is visible
Amazon.com: Casio Fx-JP500-N Scientific Calculator, High Definition, Japanese Display, More Than 500 Functions : Office Products
Casio Linage LIW-500DE Solar Waveceptor Alarm Chronograph Mens Watch L — Finest Time
Casio releases G-Shock AW-500 Re-Editions
Super Rare Casio CK-500 in Excellent Working Condition - Message Me for a Shipping Estimate | Reverb
Casio PRT - 500 PRO TREK 1376 Japan C for $203 for sale from a Private Seller on Chrono24
Casio WL-500 Illuminator Tough Solar Watch VERY NICE CONDITION SHIP FREE US ONLY | eBay