4D three-dimensional massage-deep kneading massage, combined with red and blue heat, can be used for head and body massage, has the effect of stimulating hair growth and deep cleansing hair. Two sets of massage heads-detachable and washable soft massage head and hard massage head, with 4 modes, perfectly fit the scalp and meet the needs of different people. Red and Blue LED Light Massage:(1) red light(wavelength 622nm+-10nm) promote hair growth because of the mechanism by which the cells emit a special signal when the LED light reaches the dermal papilla cells.(2) blue light(wavelength 465nm+-10nm) penetrates cells from the skin surface by 0.25nm and destroys the habitat of .It has the function of sterilization and disinfection,reduces skin ,removes pimples and also eliminates scars. Multiple uses-unisex, pets available, wet and dry, can effectively promote blood circulation, relax the body, relieve body pain, relieve stress, relieve fatigue, and improve sleep. One-key operation-simple operation, even the elderly can use it easily. Short press the button to open and change the mode. Press and hold the button for 3 seconds to turn it off. Suitable for many occasions-can be used in many occasions, such as home, office, bathing, hair care, fatigue, travel, business trip, etc. IPX7 Waterproof Design: perfect to use it while taking a shower for a proper scalp massage. Magnetic Suction Charging,Long Last Life: magnetic suction interface charging,wireless freedom,waterproof and dustproof,large capacity lithium battery. 10 minutes a day after full charge,it can be used for 10 days. Portable and suitable for long journey. Smart Timing and Battery Indicator: It will automatic shutdown after 10 minutes of single use. Charging battery capacity is displayed. Head scalp massage, improve blood circulation,release str,help hair growth. Battery type: 1200 mAh lithium battery Power supply mode: rechargeable Rated voltage: DC5V Charging time: about two hours Colour:White Material:plastic Package Contents: 1 x Electric Scalp Massager 1 x Charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.