JBL® Micro Wireless Bluetooth speaker Introducing the JBL® Micro Wireless ultra-portable speaker. With its built-in bass port and compact size, this speaker lets you take great JBL bass any place, and stream music wirelessly from any Bluetooth®-equipped device. The JBL Micro Wireless is the first ultra-portable speaker featuring a Li-ion (lithium-ion) rechargeable battery, a built-in bass port and a wireless Bluetooth connection. With a w-5/8inch (40mm) driver and an acoustic volume of 100cc, it delivers legendary JBL sound with the exceptional bass- all in a speaker that fits easily in backpacks or clips onto clothing. You can wirelessly stream audio to the speaker from any Bluetooth-equipped device, or use the included audio cable to connect it to any mobile device or MP3 player. You can even daisy-chain it with other JBL Micro Wireless speakers for a powerful sonic experience. Bluetooth technology The JBL Micro Wireless portable speaker streams music wirelessly from any Bluetooth-equipped mobile phone or tablet, making JBL sound available for a wide range of portable devices. It’s a wireless wonder. Built-in bass port JBL speakers are famous for powerful bass. But it might surprise you to hear JBL bass this strong from a speaker this small. A built-in bass port enables the JBL Micro Wireless to generate bass that’s superior to comparable portable products. Five-hour, Li-ion rechargeable battery The JBL Micro Wireless portable speaker has a built-in Li-ion battery that provides up to 5 hours of playback time. You can easily recharge the battery using a micro USB port, which saves you battery hassles and money. Portable design It’s easy to get attached to JBL sound. The lightweight, compact JBL Micro Wireless fits easily into backpacks or pockets. Smart-cable design The JBL Micro Wireless portable speaker is always ready to connect and play. And when your source device isn’t connected, the built-in 11-13/16-inch (30-centimeter) audio cable stores in the bottom of the speaker to prevent tangling. LED indicator A clearly visible LED lets you know when the built-in Li-ion rechargeable battery is low, so you know when the JBL Micro Wireless needs charging. We don’t want you to miss a moment of your music.