The Series R is designed for kids, while the Series R Assist is designed for adults who might also need to keep someone in close communication.
The Series R Assist has all the features of the Series R but also includes:
✓    Voice Playback Medication Reminders
✓    Large format user interface for easy reading
✓    Sedentary Reminders (sitting down too long)
✓    Fall Alerts
✓    Adult size crocodile embossed genuine leather wristband