The Treo Pro, was a touch-screen smartphone with Wi-Fi, GPS and a two-megapixel camera. It featured enhancements to Microsoft’s Windows Mobile operating system, such as extra hardware buttons and links on the standby screen that provided shortcuts to common applications including e-mail, calendar, Wi-Fi, Web search and more.
The device was made by HTC for Palm and had strong design similarities to the Palm Centro, albeit a bit thinner and a bit glossier. The Treo Pro saw Palm moving from its own Palm OS to Microsoft's Windows Mobile in an effort to appeal to business customers looking for an alternative to Research In Motion's BlackBerry devices. It offered security policies, device management capabilities and easy connectivity to corporate networks, to meet the needs of such users.
Palm was following other phone makers such as Motorola who had carefully selected Windows Mobile to address business users while committing to other platforms for devices with broader appeal. In the case of Palm, when the Treo Pro was announced it had chosen Linux kernel-based multitasking operating system, webOS, for its mass-appeal devices.