This is a great idea for a personalised gift. The photograph is slipped into the keyring aperture and then the plastic panel is clicked into place for a secure and dust free display option for a favourite photo. The image size is approximately 1.25 x 1.75 inches (WxH) or a more accurate measurement is 3.5 x 4.6cm. Perfect for taking a reminder of a loved one, it can be with you every minute of the day.