The Galaxy Buds 4 carry the model number SM-R540, while the model number for the Buds 4 Pro is SM-R640. For comparison, the model numbers for Buds 3 and Buds 3 Pro are SM-R530 and SM-R630, respectively. It’s been over a year since Samsung launched the Galaxy Buds 3 and Galaxy Buds 3 Pro. In a tip sent to Android Authority, the code within that build seems to provide the very first reference to the Galaxy Buds 4 and Galaxy Buds 4 Pro. AssembleDebug / Android AuthorityIf you remember, the Galaxy Buds 3 had the model number SM-R530, while the Galaxy Buds 3 Pro’s model number was SM-R630.