Inalmbrica connection V50 Scope 10m Power 6W 45 mm display 4 Ohm 400mAh rechargeable battery 3hs USB connection up to 64Gb and SD card up to 64Gb FM Radio Frequency response 20Hz 20KHz Sealruid release 80dB Sensitivity 8590 dB Charge via micro USB Dimensions 9 x 75 x 42 cm