Hammer Flow Lite electronic brushes comes with power for gentle cleaning. These battery operated brush are sleek in design. These are powered by AAA battery cells for immediate usage. Flow series are suitable for adults. Sonic brush with wavy dupont soft bristles are great at deep cleaning. Hammer automatic toothbrush comes with long battery that lasts for upto 120 days* (two minutes use, two times a day). Electrical brush is IPX7 water resistant, thus have more flexibility for usage. Electric brush for adult looks awesome in hand, if battery is drained, one can use is as a manual also. DuPont bristle in this electric tooth brush are phenomenal and soft. It can be used as an electric toothbrush for men and electric toothbrush for women. Hammer flow lite electronic brush comes with one brush head & 1 AAA battery cell. Hammer electric toothbrush meets all requirements. Brush head of electric toothbrush lasts for 3 months on continuous usage. When cleaning the brush, It is highly recommended not to wash the toothbrush body but only the brush heads. Just remove the brush head and rinse it through normal tap water only.