1.1-99 minutes adjustable, to accurately calculate seconds 2.Industrial control chip microcontroller Digital Control Mini Ulrtasonic cleanerModel:VGT-2013QTD Product characteristics: 2. 20 to 80 temperature tunable 3. industrial control chip microcontroller 4.digital display, time, temperature at a glance 5.flexible circuit boards control, more security, stability 6.the power and memory function ...