Enhanced Audio Clarity: Experience crystal-clear sound quality with our Omni-directional Microphone, designed for both small and large conference rooms. The microphone ensures that every participant's voice is heard with a pickup radius of 3 to 5 meters. Wireless Connectivity: Equipped with Bluetooth Wireless and USB interfaces, this portable conference speaker offers seamless connectivity with a variety of devices, making it perfect for hassle-free setup and mobility. Cascade Connection: Expand your audio reach with the ability to cascade multiple microphones for larger setups, ensuring no voice goes unheard during your professional gatherings or collaborative events. Power supply:DC 5V Pod4 battery:Built-in 3000mAh battery Main microphone Size:249 x 219 x 51 mm Extension microphone Size:90 x 90 x 23 mm Color:Black Material:plastic Package Contents: 1 * Omni-directional Microphone 1 * Extended Wheat Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.