z Specification Type of emission FM ( F3E ) Oscillation type Adjustable frequencies PLL synthesized control OSC Pre-programmed 80 switchable frequencies Tx RF power Operating range Battery < 10 dBm > 70 meter 2*AA Type 1.2 V Ni-MH Rechargeable batteries Microphone connector 2*AA Type 1.5 V Alkaline batteries 3.5 mm jack socket, for mono or stereo Dimensions (W*H*D) Weight 64.5*105*26.