The Siglent SHS806 is actually three instruments in one. It is a 60 MHz dual-trace store AC/Battery powered oscilloscope, a 3.5 digit DMM, and a data logger. The '806 can be powered with it's AC adapter or for up to 4 hours using it's built-in rechargeable battery pack. The data recorder can log up to 18 hours with its 7 Mpt internal storage. Record, play, and zoom functions are included along with a built-in frequency counter USB port, and display color invert - useful in outdoor lighting conditions.