Due to recent product upgrades and updates, the HB6550 series is now available in several different versions. Please note that different versions of the HB6550 monitor and camera may not be compatible with each other. To ensure we send you the correct monitor that works with your camera, we need to verify the version and model. What's in the box: Parent Unit *1 User Manual *1 Charger *1 Compatibility Notice: Due to recent product upgrades, some versions of the HB6550 monitor and camera may not be compatible with each other. To ensure we send the correct monitor for your existing camera, we’ll need to confirm your version. After You Order: You’ll receive a confirmation email asking for: 1.The Amazon order number or the date you received the camera (if gifted) 2.The Serial Number (S/N) on the back of your monitor This helps us verify compatibility and send the correct version.