JBL Deep Bass Sound - high-quality audio from secure reliable 8mm drivers. Ergonomic stick-closed design fits comfortably and enhances bass performance. Up to 8 hours of battery life - additional 24 hours with charging case. Ambient Aware and TalkThru features. VoiceAware make hands-free stereo calls on the go. IP54 Rated water and dust resistant. JBL Headphones app - control your ideal settings. Frequency response: 20Hz-20kHz. Impedance: 16 ohm. Power supply: 5V 1A. Includes: Charging cable. 3 Eartip sizes.