Samsung Galaxy Buds 4 and 4 Pro review: Impressive audio, imperfect ANC - Engadget
… The company did, however, keep the translucent lids, so you can clearly see if the earbuds are in the case without having to open it. In addition to their styles the Buds 4 are open fit while the Pro have ear tips , a notable distinction between the two is their ingress protection IP levels. …