AsaVea Hair Straightener Brush 3.0: MCH Heating Technology and Auto Temperature Lock, Anti-Scald Design – The Best Gift Choice (Rose Gold) Review Posted on June 23, 2018October 26, 2018 by Paparazzombie MCH (Metal Ceramics Heater) technology 12-level temperature Universal voltage: 110V-240V. 30-minute Auto Shut Off Anti-scald design 360° swivel power cord.Temperature Auto Lock More