Amazon.com: Learning Resources 20-Second Handwashing Timer, Children's Timer, Home & Classroom Sanitation, Ages 3+ : Toys & Games
Apple Watch Update Will Detect and Time Hand-Washing
Learning Resources Time Tracker Mini Visual Timer, Classroom Timer, Hand Washing Timer, Auditory and Visual Cue, Ages 3+ 4.8" x 3.3" x 3.3" - Walmart.com