After several attempts, Jawbone is finally putting out a Bluetooth-based piece of fitness tracking hardware: the Up24. Jawbone has previously refused to put out Bluetooth devices because of both battery life and physical constraints, but upon the wider acceptance of Bluetooth Low Energy, Jawbone has finally warmed to the idea of a BLE device. Now, whether it’s too little too late for Jawbone – who risked falling behind to competitors FitBit – will have to be seen in the sales of the product this holiday season.