JBL Wave Flex 2 True Wireless Earbuds feature 12mm dynamic drivers delivering powerful JBL Pure Bass Sound. Smart Ambient technology includes Ambient Aware and TalkThru, allowing you to control environmental sound or talk without removing earbuds. With 4 microphones (2 per earbud), calls are clearer even in noisy environments. They are IP54 water and dust resistant, while the case has IPX2 protection. Battery life reaches 10 hours (earbuds) and up to 40 hours with the case, plus 10-minute fast charge for 3 extra hours. Multi-point connection and Fast Pair/Swift Pair enable seamless device switching.