Fitbit Zip Versa 4 - Haptic Feedback; Battery; Memory; Display

Haptic feedback
Versa 4 contains a vibration motor for alarms, goals, notifications, reminders, and
apps.
Battery
Versa 4 contains a rechargeable lithium-polymer battery.
Memory
Versa 4 stores your data, including daily stats, sleep information, and exercise
history, for 7 days. See your historical data in the Fitbit app.
Display
Versa 4 has a color AMOLED display.
Band size
Band sizes are shown below. Note that accessory bands sold separately may vary
slightly.
Small band Fits a wrist between 5.5 - 7.1 inches (140 mm - 180 mm)in
circumference
Large
band
Fits a wrist between 7.1 - 8.7 inches (180 mm - 220 mm)in
circumference
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