The EM122 hand-held digital oscilloscope Compared with the same products overseas,it has higher test ... waveform distinctly·With compact,convenient,full functional operating menu·Portable hand-held instrument·Saving and recalling function·Power Source:3.6V rechargeable ... :126(W)×235(H)×50(D)mm·Weight:Approx.720g HAND-HELD DIGITAL OSCILLOSCOPE