Today only, until 9pm ET, Best Buy via Google Express offers the Fitbit Charge 3 HR Activity Tracker in Black or Blue/Gray for $129.95. Coupon code "GIFT15" drops it to $110.46. With free shipping, that's $24 under our mention from a week ago and the lowest price we could find by $19. Features:

Heart rate tracking

Measures steps taken, distance traveled, calories burned, stairs climbed, minutes of activity, length and quality of sleep

Up to 7 days of battery life

Water-resistant up to 150 feet

Compatible with iOS or Android devices