The IWELD TRIFENDER VARIFLOW is a professional powered air-purifying respirator (PAPR) system that provides the highest level of TH3-rated respiratory protection against harmful fumes, gases, and fine particles. The built-in automatic sensing and control system constantly guarantees a steady flow of clean, filtered air. Users can choose from three flow rate settings (170, 190, or 210 l/min) and monitor current values on a modern, color TFT digital display.Safe operation is supported by an integrated audible, visual, and vibratory alarm system that instantly alerts the user in case of low battery, a clogged filter, or overheating. The durable lithium-ion battery can provide up to 8 or 16 hours of continuous operating time, and thanks to a fast charging time of just 3.5 to 7 hours, the device is quickly ready for work again.