One Device, Multiple Benefits. Enjoy Professional Spa Experience Simply at Home. * Skin whitening, import nutrition, reduces wrinkles, andti aging* With 900mAH Li-ion rechargeable battery* Frequency : 1MHz* Refresh 4 hours can continue to use for 2.5~3 hours* Stainless steel treatment head for both facial and body care* 3 levels of ultrasonic strength fo selection* Two ultrasonic modes : ...