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
Which G-Shock do I need? Multiple timers, vibe alarm, (bluetooth, solar if possible) | WatchUSeek Watch Forums
Casio Men's Sport Digital Watch with Vibration, Black W736H-1AV - Walmart.com
MAKE IT VIBRATE - Vibrator Module for Casio F-91W : 6 Steps (with Pictures) - Instructables
BUY Casio 10Yrs Battery Vibration 5 alarm Sport Watch W-735H-1AV, W735H - Buy Watches Online | CASIO Red Deer Watches