NOVA is NOT a battery-operated spinning brush that you would see in a drug store – this is true patented sonic technology.Traditional spinning brushes stretch the skin and NOVA sonic cleansing is gentle; and more effective!Rechargeable with USB charging cord – no batteries required – save over $10+ per year without having to buy/replace batteries100% waterproof and submersiblePatented Antimicrobial "Clean & Fresh" brush protection - reduces bacteria formation that can grow on brush heads between use by 99.9%.Cleanses 7x better than with hands alonePrevents Clogged Pores by sonically removing dirt, oil and makeupIncreases absorption of skincare productsCleanses and exfoliates in one stepFor use on All Skin TypesSerum infusion head applies serum and creams onto the skin for maximum efficiencyIncluded convenient shower caddy to keep your waterproof NOVA cleansing brush where you need it the mostDermatologist recommendedProfessional grade resultsFresh, radiant skin after one use2-year warrantyItem Dimensions: 3.7” H x 4.64” W x 7.94” D