San Francisco-based audio brand Rowkin sent me two pairs of earbuds to try a few weeks ago, claiming that they’re the world’s smallest true wireless earphones. That’s a hard claim to test, but I can say that these are truly tiny, and smaller than any other buds I’ve ever used. But size isn’t everything, so I spent a couple of weeks with both the $100 Bit Charge Touch, which features a case that doubles as a power bank, and the $90 Micro Touch, which comes with a compact Apple AirPods-style case. I’m reviewing both products together because they sound and…

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