Galvanic ion Positive ion and Negative ion Vibration frequency 19500rp/s Battery 1 x CR2032 （Batteries not included） Massage head size 35mm Body Material ABS plastic Massage head material Stainless steel SUS304 Product Size 14.8*3.9*1.3cm Product Net Weight 69.3g Rechargeable or not Not rechargeable type Accessories User manual brochure (not including the battery & packing box)Positive Ionic：Red light release positive ionsPositive Ionic lead out function: removes metal ionin cosmetic from skin and dirty which hidden in deepskin， clear the harmful substances penetrate into skinthrough horniness deposit as positive ion in skin andcause spots rough and aging skinNegative Ionic:Green light release negative ionsNegative Ionic lead in Function：powerfully replenishes nutrients into skin which may accumulatesurrounding the skin cells as ion cluster and promotes cells to constantly absorb nutrition