Electronic Toothbrush Portable, clear healthy design, sound waves shaking, perfecting tooth, can use at any where and any time Electronic ToothbrushCare health;Insert batteries;Change toothbrush;Application method;Working Frequency: 25000Hz;Working Current: 120mA;Rotation Speed: 12500+/-15 Revolutions/minuteUnit Weight: 28.3g;Unit Size: 19*17*153mm;Battery: AA1.5V*1 Electronic Toothbrush