Protrek PRT-40 Help | Page 4 | WatchUSeek Watch Forums
Amazon.com: FITHOOD Battery Replacement for CASIO PRT-2GP Part NO MR11-2286 : Electronics
Casio Prt-40 Pro Trek for sale online | eBay
got a 2nd atc 1200 and can't get this one to power on with new batteries, shows something on screen for a second then fades out, tried AC reset. : r/ casio
CASIO (1470) PTR-40U, got this watch in 1998 as a gift from my parents. Popped in 2 new batteries and it started right away, can't beat it! : r/ casio
What battery does this Casio Protrek Watch Triple Sensor 1470 Prt-40 take? : r/casio
HOROLOGY CRAZY: Casio PAG 40 battery replacement
Vintage 1st CASIO Pro Trek PATHFINDER PAT-40 Triple Sensor - PRT-40 w Auto Light | eBay