This electric massage comb is equipped with a built-in anion generator which can generate negative ions to neutralize the positive ions and smooth, bright hair. Inheriting the meridian principle of traditional Chinese medicine, it can massage your scalp to promote blood circulation, relieve fatigue, improve sleep quality, make your hair healthier.Smooth round comb teeth provide a larger contact surface, avoiding damage to your scalp and hair. Why not have a try?Features:1. Negative ion: Built-in anion generator which can generate negativeions to neutralize the positive ions and smooth, bright hair.2. Massage: Inheriting the meridian principle of traditional chinese medicine, it can massage your scalp to promote blood circulation, relieve fatigue, improve sleep quality, make your hair healthier.3. Ergonomic design: Oval shell can fit your hand perfectly to ensure an excellent grip experience.4. Smooth round comb teeth provide a larger contact surface, avoiding damage to your scalp and hair.5. Long-term use can reduce hair loss effectively, relieve headaches and dizziness. 6. Light weight: Enjoy a massage experience at anytime anywhere.Specification:Item Type: Electric Massage Comb Material: ABS Battery: 2 * AAA Batteries (Not included)Temperature: 15-35 (for working and storing)Item Size: Approx. 12 x 6 x 6 cm / 4.7 x 2.4 x 2.4 inchPackage Weight: Approx. 182 g / 6.4 ozPackage Include:1 * Electric Massage Comb1 * ManualNote:1. Please read the manual carefully before use.2. Please allow 1-3 cm error due to the manual measurement. Thanks for your understanding.3. Monitors are not calibrated same, item color displayed in photos may be showing slightly.