Adult Home Mart Hair Whitening Toothbrush Toothbrush Electric Soft Care Bathroom Products Paper Towel HolderSize and color: blackType: a) Rotate the of the lower cover to the left to the end, point to the leftmost on the fuselage, and pull out the lower cover downwardsand then rotate the lower cover to the right so that the on the lower cover corresponds to the OFF .The product contains: 1pc + 2pc brush headHow to install the brush headPower supply mode: dry battery (No. 5 AA)c) Install the lower cover. First, when installing, the still points to the leftmost on the fuselage,Place the toothbrush with the word side facing you, and install the toothbrush bristles on the toothbrush body, and gently rotate 90 degrees to the right (to make the toothbrush head bristles face yourself) to complete the installation.Model: BL-033Control mode: Rotate (turn right to ON, you can use it)Size: 202mm*25mm*25mmb) Put 1 battery into the toothbrush battery slot (the product is powered by alkaline batteries and cannot be recharged)Brush head: soft hair (W type)Accessories: , two brush heads, manual and waterproof: levelHow to install the batteryAcoustic vibration frequency: 31000 times/minName: Electric ToothbrushSuitable for the crowd: people over 6 years oldproduct parametersVoltage: 5V