Buying the unlocked model of the HTC U11 gets you 3 months of Amazon Music Unlimited for free. Music Unlimited is Amazon’s premium music streaming service. It differs from the version included with Prime in that it has tens of millions of songs new and old, as opposed to the limited selection of just over 1 million you get for being a Prime member.
The service is usually $9.99 per month with Prime or $7.99 with Prime, which translates to a value of $24 or $30 depending on which category you’d otherwise fall under. Head to HTC’s website to snag one if you’re interested.