1. Roller massage cover, which can protect the product and massage with double rollers in V shape. 2. Arc massage head, suitable for neck ; 3.Type-C charging port, fast charging; 4. Function 1: Acoustic vibration, tightening from the ; Photonic rejuvenation, light lines and wrinkle resistance, whitening and yellowing; -current, stimulating cell vitality; 45 temperature technology, re-energizes; Product name: color light hot compress roller neck beautifying instrument Battery capacity: 400 mA -602040 rechargeable battery Charging interface: Type-C charging port Rated power: 4W Output voltage: 3.7V Features: Main functions: massage V face+hot compress+colorful light+vibration +. Usage steps: using the product, clean the parts to be cared for, Apply proper amount of care essence and lotion; Massage-massage cover can be to massage the neck; : Select-long press for 2 seconds to the machine, short press to select the mode; Colour:White Material:ABS Size: 10.8 x 8.5 x 3cm Package Contents: 1 x drawer box 1 x beauty neck instrument (with massage ball) 1 x English instruction 1 x Type-c 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.