And for anyone who needs a little self-improvement, there’s Keen from HabitAware. The smart-bracelet uses gesture detection technology to gently nudge wearers into breaking bad habits, such as nail biting or hair twirling. The bracelet vibrates when it notices that your hands are in the wrong place and vibrates as a reminder.
Not sure which size is right for you?
It's important that Keen has a snug fit on your wrist. Here's a quick guide to help you decide which bracelet size to order:
Small/Medium
Fits kids and adults with small-medium wrists
min: 5.25 inches (13.3 cm)
max: 7.50 inches (19.0 cm)
Medium/Large
Fits adults with medium-large wrists
min: 6.15 inches (15.6 cm)
max: 8.50 inches (21.6 cm)
Small/Medium
Fits kids and adults with small-medium wrists
min: 5.1 inches (13.0 cm)
max: 6.8 inches (17.2 cm)
Medium/Large
Fits adults with medium-large wrists
min: 6.3 inches (16.0 cm)
max: 8.2 inches (20.8 cm)