Bamboo X double speakerBamboo X double speaker Natural sound from a natural speaker. This sustainable speaker combines an amazing sound experience with a stylish design made from durable and responsible materials. The casing is made out of durable bamboo and fabric made from a blend of 30% Organic cotton, Hemp 40% and 30% recycled PET. The 10W speaker uses high quality components to guarantee longevity. The 2. 200 mAh battery will play up to 6 hours on one single charge. It