Basicase8482; Handmade Natural Bamboo Wood Portable Mini Speaker M174A Mobile Phone Apps Special Edition This adorable high quality portable speaker works with anything the plays music. It is great for work, school, travel and will go anywhere you do! It has a built-in Lithium-ion battery with up to 4 hours of playing time. It is rechargeable via USB to computer or power adapter. Compatible with any device that plays music.