ART-M1 Magnetostrictive Ultrasonic Scaler Aside for its excellent quality, it offers a very economical price. Specifications are as follows: Operation Frequency : AVAILABLE IN BOTH 25KHZ OR 30 KHZ. Power : From 10 to 30 Watts of output power during normal scaling speed. Turbo Function : Increase power when use during scaling on one touch of the button C25W to 35W output power. Water Supply : 25-60 PSIG (172-414 Kpa) Optional accessories: 25khz or 30khz inserts ISO Certified; CE Marked; FDA 510K