Pro FlashLED the flashlight which saves battery!The true torch using LED technology in your iPhone 4! For prolonged use you can save battery life due to the proximity sensor by putting your iPhone 4 on a flat surface (screen side).- Instant light of the powerful integrated LED flash on the back of the iPhone- Preserves battery life with the proximity sensor (iphone puuting down on screen side)- Power ON-OFF- Strobe Effect- desactivation of the automatique sleep mode- fancy and animated designFor example, you need to illuminate a room for an extended period, put down your iphone on the screen side. This action will permit to desactivate the proximity detector, therefore you will save the battery autonomyFlashLED Pro works only on the iPhone 4If you need any information, please feel free to contact me and don't hesitate to visit my website