Bamboo wireless speaker - Bamboo wireless speaker - 5.3 wireless speaker in ABS with bamboo casing and LED indicator light. 1 rechargeable 300 mAh lithium battery included. Output data: 3W, 4 Ohm and 5V. Playback time approx. 4 hours. Bamboo is a natural product, so there may be slight differences in color, pattern and size.