POTTY TRAIN YOUR KIDS EASILY WITH A FUN MELODY ALARM - the watch is programmable to play the tune "Wheels on the Bus" to remind your kid to go do their toilet business every 30, 60, 90 mins or 2 hours, and automatically recurs. The watch can switch from music to vibration if needed for school or quiet areas. | IMPROVED WATER-RESISTANT AND BATTERY LIFE - No need to remove the watch every time your kids go to the bathroom! They can wash their hands or play with water without fear of damaging the watch. Upgraded V2 watch model only needs charging about once a week. | EBOOK INCLUDED - Comes with complementary 18-page picture digital ebook, "Benny Bradley Learns to Potty," a beautifully illustrated children's book, It's fun and educational for potty-training toddlers, Mommies and Daddies! Please note this is meant to be read on a digital reader such as a tablet, phone, kindle, or computer reader device. This watch package does not come with a physical book. | EASY TO USE WHILE TAMPER-PROOF - we programmed the watch so that the reminders do not shut down by accidental touches. There's no batteries needed, as it is rechargeable by USB cable. | SECURE WRIST STRAP DESIGNED FOR TODDLERS AND KIDS - uses a classic watch buckle clasp instead of clip on. The watch stays on the kids even through active playtime! Wrist strap is custom-fit for toddlers and young children. The strap is 100% Non-Toxic, BPA/Latex Free Silicone.