Output Power: 0.5w

Input: DC 7.5V

Speaker: 0.5W, 36mm, 8ohm

Solar Battery: 6V, 30MA, Size: 40.5 X 60.5 X 2.5mm

Inner Rechargeable Battery: NI-MH 1/2 AAA, 180MAH 6V

with switching plug: MOTOROLA V3 and NOKIA 8210