I've been searching about the storage size but all I found was rumors of 4 or 8 gb. Apple's website doesn't say it. Since we will be installing app, I would prefer to get a 8gb. When apple says, "Control the music on your iPhone. Or leave your iPhone at home and listen to your favorite synced playlist right from Apple Watch using wireless Bluetooth headphones."... I can wirelessly listen to music on my iphone? Or I have to subscribe to iTunes Match?