The Solo Jacket is a Bluetooth speaker with voice confirmation and true wireless capability. Speaker features aptX technology for CD quality audio. Onboard microphone offers clear, hands-free communication. Waterproof, shockproof, and dustproof construction includes a built-in rechargeable Li-ion battery with 6-hour battery life. Single 1.5" neodymium driver. Includes 3.5mm Aux-in connector for added device compatibility. Designed to float. 4.2" x 1.8" x 4".