FEATURE: Bristles: Made of DuPont Nylon Bristles Handle Material: ABS/TPE 3 Colors available: Pink, Blue, White Bristle Length: 10mm/0.4inch Power Supply: 1 x AAA Battery (Not Included) Battery Life: up to 90 days (approx) Frequency: 18000 strokes per minute Function: Whitening, Prevent tooth decay, Fresh breath, Reduce gum bleeding Made of DuPont grinding bristles, avoid damage to teeth and gums Removes more plaque than a manual toothbrush Sonic technology: 18000 times/min power shaft Cleans between teeth and along the gumline Come with 3 extra replacement brush heads Built-in power button, waterproof IPX7. Full body washable. Can be normally used even if it was soaked in water (with 30min, water depth not over 1m) Package Content: 1 x Sonic Toothbrush; 2 x Extra Replacement Brush Heads Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures, but not the same performance on different bodies as on the model. Thank you!