Casio Vibration Watch - Black+Grey - Built to Last
Casio TRT-110 — Cheap Mudmaster with Vibration Alarm
Casio ldf-12] was searching for a vibration alarm watch, and most were too chunky for me (Gshock sized) but fortunately cane across this interesting piece...pretty unusual in many ways : r/casio
Casio Vibration Alarm Mens Wstch 3416 W-735H | eBay
Casio Men's Vibration Alarm Digital Chronograph Watch - W735H-1A2V