The JBL Vibe Flex 2 are true wireless open-ear earbuds designed for comfortable everyday listening. They feature JBL Pure Bass Sound, Smart Ambient technology and 4 microphones for clear calls. With up to 40 hours of total playback time, fast charging and water and dust resistance, they are ideal for work, travel and daily use. Key features True wireless open-ear earbuds with JBL Pure Bass Sound 12 mm dynamic drivers for clear and powerful sound Smart Ambient technology with Ambient Aware and TalkThru 4 microphones for crisp and clear voice calls Up to 40 hours of total playback time Up to 10 hours playtime from the earbuds Fast charging: 10 minutes gives up to 3 hours of playtime IP54 water and dust resistance for earbuds IPX2 water resistance for charging case Bluetooth 5.3 wireless connection Multipoint connection for switching between devices Google Fast Pair and Microsoft Swift Pair support Compatible with the JBL Headphones app Dimensions Driver size: 12 mm Earbud weight: 4.12 g each Charging case weight: 35.68 g Total weight: 43.92 g Frequency response: 20 Hz - 20 kHz Impedance: 16 ohms Charging time: less than 2 hours