Specifications: Size: Height: 170mm/6.69in, Length: 41mm/1.61in, Width: 31mm/1.22in, Massaging Head Length: 54mm/2.12in Nominal Input: AC 100V-240V, 50/60Hz Output/Voltage: DC 5V/1A Nominal Voltage/Nominal Capacity: 3.7V/500mAH Nominal Power: 4W Modes: Four modes Charging Time: Approximately 3 hours (Charging Status: Charging shows red light, Full shows white light) Intensity Switch: 3 switches Package List: 1 * Retail Packaging 1 * Device 1 * Manual 1 * USB Charging Cable Function: 1. [Positive and Negative Ions] Using the principle of positive and negative ion attraction, dirt in deep pores is removed through biological current and cleaned thoroughly. Cosmetic ingredients penetrate into the deepest skin layer via ion therapy. 2. [Vibration] Mechanical vibration and tension stimulation are used to tighten human skin, increase elasticity, and improve skin cell metabolism. 3. [Heat] Warm massage promotes absorption, stretches skin structure, and makes the skin plump. 4. [Red and Blue Light Function] 5. [Four Modes] Skin tightening, brighten skin tone, resist wrinkles, remove wrinkles, remove facial impurities. Note: The product has been updated, it is an English screen and English manual.