... heating dermal collagen. Features:1. Designed for different deep-specific RF frequency [0.8MHz, 1.6MHz, 2.6MHz] for wrinkle ... pulsating work, the key of patented technology is preventing the RF overheating, so that release the collagen cells, stimulate regeneration, ... : CR 7Input: AC220V/50Hz, AC110V/60HzOut Frequency: 0.8 MHz, 1.6 MHz, 2.6 MHzPower: 250 VAWavelength: 650nmPulse frequency: 0.5 ...