Nokia revealed its two new smartphones to run the next version of Windows. Both features a built-in wireless charging capability.  It is a big step for a company that has bet its future on an alliance with Microsoft. Nokia’s executive vice president, Jo Harlow said Wednesday in a press event, “Whenever you recharge, your phone can recharge too. It’s the start of a new era in smartphone power management”.

Jo Harlow said, “The Lumia 920 camera captures five to ten times more light than other smartphones”. It features a 4.5-inch curved glass screen display to capture images in high resolution with its camera.

Nokia Corp.’s new flagship phone is the Lumia 920, which runs Windows Phone 8. The lenses on its camera shift to compensate for shaky hands, resulting in sharper images in low light and smoother video capture, Nokia said. It can also be charged without being plugged in; the user just places it on a wireless charging pod.

Nokia also unveiled a cheaper, mid-range phone, the Lumia 820. It doesn’t have the special camera lenses, but it sports exchangeable backs so you can switch colors.

Nokia CEO Stephen Elop said the new phones will go on sale in the fourth quarter in “select markets.” He didn’t say what they would cost or which U.S. carriers would have them. AT&T Inc. and T-Mobile USA have been selling the earlier Lumia phones.

Investors seem to have expected more specifics, or an earlier launch. After the announcement, Nokia shares fell 45 cents, or 16 percent, to close Wednesday at $2.38 in New York. The stock is at its lowest levels since the 1990s.