Target offers the FitBit Zip Wireless Activity Tracker in Black, model no. FB301C, for $49.99. Even better, choose free in-store pickup and the price drops to $39.99. That's the lowest total price we could find by $9, although we saw it for $5 less in April. It features Bluetooth 4.0 connectivity and a free iPhone/Android app. It tracks steps, distances, and calories burned and wirelessly uploads data to your computer or phone so you can see graphs, set goals, and track progress, as well as post results to social media outlets. Deal ends August 2.