With JBL WaveFlex Perfect Fit, you can bring your sound everywhere. With bass, you can feel up to 32 hours of battery life. With a secure, comfortable, stick-open design, the splash and dust-resistant JBL Wave Flex is designed for daily entertainment. Whether roaming city streets or relaxing on the beach, your hands-free stereo calls will always be crystal clear, while Smart Ambient technology keeps you aware of your surroundings.