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UA Project Rock True Wireless – Engineered by JBL


Truly wireless sport headphones to maximize each and every workout, with JBL technology and sound


Wireless freedom built for the grind

UA Project Rock True Wireless offers a truly cord-free experience built for the grind. UA Storm waterproof technology and Antibacterial Sport Flex Fit ear tips were crafted specifically for all-condition training while the JBL Charged Sound was boldly optimized and tuned with rich bass for motivation. Hear your surroundings with Bionic Hearing featuring TalkThru Technology for quick conversations with just one touch, and AmbientAware Technology to hear your surroundings for increased safety. With up to 25 hours battery life and a rugged aluminum charging case, these headphones truly break the limits.


General Specifications

Bluetooth version 4.2

Audio Specifications

Driver sensitivity at 1kHz/1mW (dB) 95
Dynamic frequency response range (Hz) 20Hz – 22kHz
Impedance (ohms) 14


Weight (g) 15
Weight (oz) .53

Control and Connection Specifications

Bluetooth profiles A2DP v1.3, AVRCP v1.5, HFP v1.6
Bluetooth frequency 2.402GHz – 2.48GHz
Bluetooth transmitted modulation GFSK, π/4 DQPSK, 8-DPSK
Bluetooth transmitter power <9.5dBm


Battery Type Rechargeable lithium-ion (3.7V 2 x 110mAH)
Charging time (hours from empty) 2
Maximum play time (hours) 5
Maximum talk time (hours) 25


Ambient Aware Yes
Bluetooth Yes
Charging cable Yes
TalkThru Yes
Wireless Yes
Built-in Microphone Yes
Charging case Yes
Ear-bud Yes
Hands Free Call Yes
JBL Charged Sound Yes
Sweat Proof Yes
True Wireless Yes
UA STORM Proof Yes
Water Proof Yes
Click here for a complete list of all specs for this product

Spec Sheet (English)

English 488 KB
  • 1 x True Wireless Flash in-ear sport headphone
  • 1 x Protective sport charging case
  • 3 Sizes of ear tips
  • 3 Sizes of Freebit tips
  • 1 x Utility case
  • 1 x Quick start guide
  • 1 x Safety sheet
  • 1 x Warranty card
  • 12-Month MapMyFitness™ Premium membership
  • 1 x Brahma Bull Sticker
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