b"TECHNOLOGY & ACCESSORIESThe sun as an additional power source This speaker can be fully charged in approximately 2.5 hours using the micro-USB cable provided. In conjunction it has a solar panel that can deliver extra energy to charge the rechargeable battery that powers the device. The additional power provided depends on the strength of the sun's rays.40Solae MO68385.0 wireless 3W solar powered speaker with bamboo casing.1 Rechargeable Li-Ion500 mAh battery. Playing time approx. 4h.Size 93x62x23 cmPrint technique Pad printing,L 11"