2-in-1 Fractional Professional Body Skin Tightening Cold Hammer Machine Technical Specifications Voltage: AC110/220V; 50Hz/60Hz RF Frequency: 2MHz-4MHz RF Power: 10-200W 10-pin, 25-pin, 64-pin, and Nano Cartridge Needle Thickness: 0.3mm Needle Depth: 0.2-3.5mm Treatment Time: 0.1-0.5s Suction Level: 2 Levels Control Display: 8-inch Color Touch Screen ADVANTAGE 1. Cartridge: Protects the epidermis, prevents burns 2. Stepper Motor Type: Needle inserts smoothly into the skin without shock 3. Gold-Plated: Highly biocompatible, suitable for patients with metal allergies 4. Precise Depth Control: 0.2-3.5mm in 0.1mm increments 5. Safety Treatment: Sterilized Disposable Needle Cartridges 6. Suction Combined probe for better skin contact 7. Trigger button for flexible handpiece operation 8. 4 cartridge sizes to suit different treatment areas