... /Clock/Alarm 2.Factory price 3.New design high quality. Wooden Clock speaker RX-138 Specifications Speaker Power:5W*2 ... Wooden Clock and Alarm portable speaker RX-138 SNR:>=85dBFrequency Response: ... :DC5v-3hours,USB-4~5hoursLast time:2~3hoursMaterial:ABS Plastic, Wooden BoxFunction:Support SD card, USB, FM, can connect to MP3 ...