Brand Name : AOKOOrigin : Mainland ChinaModel Number : ASC692Material : ABSItem Type : Massage & RelaxationMaterial : ABSVoltage : DC 5V/ 1ABattery capacity : 750mAhVibrating frequency : 7500rpmPower : ≤0.75WLiquid tank capacity : 10mlCharging time : 3.5HEMS gear : 3Vibrating gear : 3 Features : 1. EMS and vibrating technology work together for effective import, promoting the absorption of hair care product. 2. Quickly activate the hair follicle root nerve and capillary, relieve brain fatigue, reduce mental pressure.3. Relieve head pain, promote metabolism, maintain brain health, massage specific acupoints on the head to improve sleep quality.4. You can add hair growth liquid or nutrient solution into the water tank, liquid will outflow with the vibration massage, nourish hair.5. Energize the scalp from the source, reduce hair loss and dandruff, deeply care for hair and scalp.6. Conform to ergonomic design, the handle is easy to grip, saving effort.7. 15 minutes auto power off, humanized reminder of indicator light and voice reminder, upgraded using experience combined in this mini device. Specification : Item Type: Head Massage CombCharging Voltage: 3.7-4.2VBattery Capacity: 750mAhVibration Frequency: 7500pmService Power: ≤0.75WCharging Time: ≤3.5hWater Tank Capacity: 10mlUsing time: 15mins (15 minutes auto power off)EMS gear: 3Vibrating gear: 3Charging indicator: red light flashes while charging, light constantly on when fully charged How to use 1) Anticlockwise rotate ring till take it off. 2) Slowly add liquid into it. (the max. capacity is 10ml). 3) Clockwise tighten the ring before using. 4) Long press the [ON/OFF] button for power on. It enters the default setting of ion import function + 1st gear vibration, with the infrared light on. 5) According to your need, press the [Vibrating] button for gear adjustment(3 gears available). 6) Press [EMS] button for electricity adjustment(3 gears available). White indicator on: 1st gear flashes 1 time, 2nd gear flashes twice, 3 gear flashes 3 times. Package includes : 1 x Head Massage Comb1 x USB Cable1 x ManualNOTE : We suggest that wash the container after use. Don't let hair care product stay in the contaner . keep the container clean. Feedback : Please contact us ASAP if you not satisfied with the order,We will offer our best service until you are satisfied!If you satisfied with the items, please take a minute to leave us a positive feedback with 5 stars as an encouragement.