As one of its daily deals, A4C offers the refurbished Fitbit Charge Wireless Activity and Sleep Tracker in Black or Slate for $39 with free shipping. That's tied with our March mention and $31 under the lowest price we could find for a new unit. It tracks your daily activity and sleep patterns and features an OLED display showing caller ID and fitness stats. It's available in size S or L. Deal ends today.

A 90-day A4C warranty applies.