Best Buy offers the Fitbit Force Wireless Activity + Sleep Wristband in Slate, model no. FB402SLS, for $129.99. Coupon code "BLOGGERS15OFF" drops it to $110.49. With free shipping, that's the lowest total price we could find by $19, although we saw preorders for this item for $13 less on Black Friday. It tracks your daily activity and sleep patterns to help you attain your fitness goals. It's available in size S only.