BuySpry via eBay offers the open-box Fitbit Charge HR Wireless Activity Wristband in four colors (Black pictured), model no. FB405, for $85.99 with free shipping. That's $4 under our mention of a new, factory-sealed model from last week and $14 less than the best price we could find for a sealed unit today. Features include continuous heart rate monitoring, step-, distance-, sleep-, and calorie-tracking, an OLED display with clock, Bluetooth 4.0, and wireless sync with supported computers and smartphones. It's available in sizes S and L.
Note: This item ships in its original retail packaging and includes original accessories. A 60-day BuySpry warranty applies.