The JBL Wave Flex are true wireless, stick-open earbuds featuring JBL Deep Bass Sound, 32 hours of total battery life, and water/dust resistance, designed for everyday entertainment and calls. They are a budget-friendly option in JBL's lineup. The ergonomic, stick-open design sits comfortably in your ears without blocking the ear canal, suitable for all-day wear. You get up to 32 total hours of playtime (8 hours in the earbuds plus an additional 24 hours from the charging case). free stereo calls are supported with VoiceAware, which lets you control how much of your own voice you hear during calls. They use Bluetooth 5.2 and are compatible with the JBL Headphones App for sound customization.