Charging method: USB, built-in battery 500mAh. In the package: charging cable, manual. Product size: 89*47*120mm. Features: Green light (CLEAN) with low vibration, brightening mode (no heat) for deep pore cleansing and pore shrinking. Red light (EMS): mid-range vibration, care mode (no heat) for enhancing the effectiveness of skin care products, promoting skin vitality, whitening, rejuvenating, and reducing wrinkles. Blue light (HOT): high-frequency vibration, warm moisturizing mode (with heat) for warm massage to enhance circulation, lifting and firming, and improving skin elasticity. How to use it? Step 1: Clean your face and neck first. Step 2: Apply an appropriate amount of skin care products on your neck and face. Step 3: Select your preferred mode. Step 4: Start from the base of the neck, slowly move the massage head upwards toward the chin and jawline, all the way up to the forehead. Step 5: It is recommended to use for 15 minutes per day during skin care routines. Double Chin Removal, Nutrition absorption. Dolphin tail design, exquisite and classic. Neck lifting and skin tightening. Arc-shaped design adheres to neck and body line. This massager generates warmth to benefit every inch of neck skin. Cleans deep pores to effectively shrink pores, reduce spots and acne, and revive dull skin.