JBL Tune 520bt

Driver size: 33mm dynamic drivers. Sound: Features JBL Pure Bass Sound, which delivers powerful and deep bass. Frequency response: 20 Hz to 20 kHz. Impedance: 30 ohms. Bluetooth: Version 5.3 for high-quality wireless streaming. App support: Customize your sound with the EQ in the free JBL Headphones App. Multi-point connection: Allows you to switch between two different Bluetooth devices.