Back in 2014, Microsoft launched their first smartband, simply called the Band, with an LCD display. The company is now reportedly aiming to launch the Band 2 on October 6th, and according to a leaked photo it looks like it might be using a curved display:

Microsoft Band 2 leaked photo (Sep 2015)

The Band 2 looks very similar to Samsung's Gear Fit which was launched in 2014. The Fit had a flexible OLED - a curved 1.84" (432x128) Super AMOLED.

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