We're here to help with your JBL Reflect Aero TWS. We recommend cleaning the contact pins on the case and earbuds using a cotton swab with alcohol. These pins are sensitive to dust. Please ensure the pins are dried before placing them back on the case. If you need more help, we'd like to work with you directly. Please contact our customer support for assistance.

Thanks for your feedback, we're here to help. Our JBL Reflect Aero is compatible with the JBL Headphone App, allowing you to customize your audio experience to your exact preferences. Also our JBL Reflect Aero comes with 3 sizes of sealing eartips. To achieve the best seal and secure fit, you must create a tight seal within your ear canal. To do this, angle the ear tip slightly downward to make it easier to insert into your ear canal, gently twist the earbud to fit it securely into the shape of your ear, and continue twisting the earbud into your ear canal.