Anker Portable Bluetooth Mini Speaker with Built-in Mic for $19.99. Shipping is free on orders over $25. If needed, use this Filler Tool to pad the order for free shipping. Here is a screenshot for your reference. It features rechargeable built-in lithium battery with 10 hours of playtime, 3.5mm audio cable to connect your non-Bluetooth devices, portable mushroom-shaped body, and 4 buttons control for volumes, power on/off and communication functions.