Fitbit’s Charge is a fitness tracker and sleep tracker that also connects to your phone to show caller-ID. The Charge uses a small monochrome (white) PMOLED display ( made by WiseChip ). The Charge HR is similar to the Charge but with a heart-rate monitor. The Charge is now available for $130. The Charge HR will launch in early 2015 for $150.

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New OLED gadget: Fitbit Charge