5.0 wireless speaker in Bamboo and 10W wireless charger. Connect device to your computer, place smartphone on it to commence charging. 1 Rechargeable Li-Ion 2000 mAh battery. Output data: 3W, 4 Ohm. Playing time approx. 4h. Bamboo is a natural product, there may be slight variations in colour and size per item, which can affect the final decoration outcome.