Self timer is an automatic feature that provides a delay after you presses the shutter until the shutter actually opens to allow you to take a self-portrait to pose in a family group picture or to reduce hand-shake.RNS:: TopCameraTimer adds this feature to the built-in Camera application on your Treo. After the installation a new button becomes available in the Cameras interface. When you press the button the timer starts to count down to finally take a picture.You may adjust the timers delay and toggle tick sounds in the RNS:: TCT panel of the system Prefs application. This product was created for Treo 650 Treo 680 Treo 700 and Treo 755p only. It will not work on other devices than Treo 650 Treo 680 Treo 700p or Treo 755p.