Operating Frequency

Operating frequency, measured in megahertz (MHz), is how fast a HIFU transducer’s ultrasound waves oscillate, and it influences how tightly the energy can be focused and how deep it can usefully penetrate. Across the HIFU category, frequencies typically range from around 1 MHz (deeper penetration, used for fat and connective tissue) up to 7 MHz (finer focus, used for superficial skin quality). ULTRAISER’s devices — the P1, P1 Pro, and the eHM15 clinic system — all operate at 4 MHz, a frequency chosen to balance precise focusing with sufficient depth to reach the dermis and, on deeper cartridge settings, the SMAS layer. Frequency works together with focal depth and cartridge design to determine which layer of tissue actually receives the energy, so the two specifications are usually quoted side by side on any HIFU device’s technical sheet.