Specifications: Color: white Material: ABS Power by: Built-in 3.7v/500mAh battery Charging method: USB Charging voltage: 5V-1A Rated power: 2.5W Charging time: about 2 hours Size: (length x width x curve head length)about 12 x 4.7 x 8.9cm/4.72 x 1.85 x 3.50inch Package Includes: 1pc x Neck firming tool 1pc x USB charging cable 1pc x User manual Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.?SKIN LIFTING?The warm feeling accelerates blood circulation, rejuvenates the neck skin and promotes collagen production. It soothes neck muscles, shrinks pores, improves skin elasticity, lifts and tightens. ?LIGHT AND SOUND WAVES?Using multi-light wave technology combined with high-frequency sound waves, it features red light and micro-current, ion nutrition, can effectively reach the bottom of the neck muscle, thereby preventing neck wrinkles. ?FADE WRINKLES?By decomposing and re-introducing nutrients by ions, it improves the absorption efficiency of nutrients. It can be used with neck cream or neck mask to enhance skin activity and reduce neck lines. ?CURVED DESIGN?Three-dimensional circular radian, and ergonomic design, the firming tool fully fits the neck and better touches the neck skin. The curved head slides along the neck and chin. ?3 MODES?Green light (CLEAN) low-level vibration, skin brightening mode (no heat), cleans garbage deep in pores, shrinks pores, calms, and improves dull skin tone. Red light (EMS) middle-range vibration, nursing mode (no heat) introduces skin care products to enhance skin activity, whiten and rejuvenate skin, and reduce wrinkles. Blue light (HOT): high-frequency vibration, warm and moisturizing mode (with heat), massage to promote circulation, lift and tighten, and improve skin elasticity.