How long is the battery life of The Rock’s new headphones?
Answer: 45 hours.
To build a pair of over-ear headphones designed specifically for use in the gym, Under Armour and JBL turned to Dwayne “The Rock” Johnson for input. The result is the UA Project Rock Over-Ear Headphones, which among other features boast an impressive 45-hour battery life. They also have a Speed Charge Battery that can reportedly provide two hours of playback after just five minutes of charging.
As far as sound quality goes, the headphones have “maximum motivation and amplified bass” thanks to JBL Charge Sound. They were also reportedly fine-tuned by The Rock himself. They include adaptive noise canceling, TalkThru and Ambient Aware modes and hands-free voice commands via Google Assistant or Amazon Alexa. On the outside, they have UA SuperVent ear pads for breathability and an IPX4 sweat resistance rating.