The Zoyi ZT-703S 3-in-1 Oscilloscope Multimeter is the ultimate handheld laboratory for engineers and hobbyists. It seamlessly integrates a 50MHz dual-channel oscilloscope, a 25,000-count high-precision multimeter, and a built-in signal generator. Featuring a vivid 3.5-inch IPS color display and a rechargeable 3400mAh battery.