I purchased this item for my wife since she doesn't always like to take the camera with her and we miss those photographic moments with the clarity an i-phone can't offer. Apart from the plastic case with attachment (which has to be the replacement for an existing i-phone cover), the lens by itself is mere 6x optical with manual focus adjustment. There isn't always a good fitting between the plastic case and the lens or the i-phone, which lets some stray light into the picture and blurs it up. Another problem is the short lens - i-phone combo is quite sensitive to vibration/movement since you have to touch the screen of i-phone to click. By the time you see the object, focus and take a picture, it's either blurred or shaky. With multiple attempts of stationary objects, I could get a passable picture. As far as moving objects are concerned, don't even try it. Disappointment is written all over your receipt at that time if you had purchased it.
My recommendation: DON'T buy it. Spend a few more dollars and get an average quality point and shoot camera or get a good binocular.