The JBL Tune Flex make your day better, song by song. Fully wireless earbuds give you 32 hours of exceptional JBL Pure Bass sound, while the ergonomic and waterproof design provides all-day comfort in any weather. With a simple touch, you can make uninterrupted calls anywhere without ambient noise. With active noise cancelling and Smart Ambient technology, you can choose to block out the outside world or engage with your surroundings. The lightweight stick-open design ensures all-day comfort and natural sound perception. You can personalise your entire listening experience with the JBL Headphones app. Stay connected to your world, your way. JBL Pure Bass Sound. Sophisticated 12mm speaker drivers, further supported by the stick form factor, deliver JBL's Pure Bass Sound, so you'll feel every pulsing beat. Active noise cancelling with Smart Ambient. Hear more of what you want to hear and block out other things. With 2-microphone active noise cancelling technology, you can minimise acoustic distractions. Ambient Aware lets you be aware of your surroundings at all times so you feel safer when you're out and about, while TalkThru lets you pause for a quick conversation without taking off your headphones. 4 microphones for perfect calls. Enjoy hassle-free hands-free calling in stereo. The Tune Flex is equipped with 4 microphones so the person you're talking to can hear you perfectly. It's fun to answer or return a call. And with VoiceAware, you can decide how loud you want to hear yourself by controlling how much of the microphone input is routed back to the earphones.