EASYSHOPEE S10 Mini Wireless Portable Plastic Bluetooth Speakers with TF Card Hi-fi MP3 Music Player Subwoofer Home Audio for All Android and Apple Devices Deep Bass Driven Rich Sound. 45mm Driver For Crystal Clear Music Session. The Speaker Houses a 520mAH Rechargeable Battery Which Can Last Up To 3-5 Hours. Micro SD Card and Pen-Drives Support. Comes With Volume Rocker Buttons For Adjusting Volume.