UAG Metropolis pros and cons Pros Tough polycarbonate construction built to last in a wallet or purse. 5-month battery life with wireless recharging. Simple to use, no third-party app needed Cons High price (but on par with similar tracker cards). I wouldn't use this as a luggage tag. $44.95 at Amazon $44.95 at Walmart Follow ZDNET: Add us as a preferred source on Google. Once again, I'm waxing lyrical about Apple AirTags . I absolutely love them. They've been the one piece of tech that has truly transformed my life. But as much as I adore them, they're not perfect. One thing that hasn't changed in the nearly five years since their release is their shape. No matter how big a fan I am -- and I consider myself their No. 1 fan -- even I have to admit that their little UFO-like design doesn't fit well into a wallet or purse.…