The JBL Tour Pro 2's True Adaptive Noise Cancelling technology tunes out any distractions and lets you focus on what you're doing while soaking in superior audio with Hi-Res JBL Pro Sound. Control JBL Headphones App's key features without using your phone - just touch the charging case screen's 1.45-inch display for a truly seamless experience - while a single charge from the innovative Bluetooth-enabled smart charging case will give you up to 40 hours of spatial audio.