The manufactuer have passed CE/ROHS/ISO9001/ ISO13485 New big grip design Especially for man in big palm.The speed of as fast as 35 thousands of strokes per minute and with advanced micro motion technology, the sonic toothbrush can breakdown the tooth paste into tiny bubbles. It removes everyday stains on surface and crevice and protects and massages gingiva and gum, promotes blood circulation,prevents gingival atrophy and reduces gum bleeding. Features: 1>Sonic electric toothbrush replacement brush for Adults with 35000 strokes per minute super high speed adjustable Two kinds of speed /3 extral brushes 2>innovation micro brush 35000 strokes per minute 3>30 seconds reminder 4>2 minutes timer 5> brand：STONG 6>main body materials:ABS TPE 7>bristles materials:Dubon nylon 8>standard figuration:1 grip +3 brushheads 9>No 1 in chinese market! 10>Sell well same as Pansonic toothbrush(No 1 in Japan) 11>The manufactuer have passed CE/ROHS/ISO9001/ ISO13485 Quality certificates 12>Weight of the product:99g Package included: 1 x sonic toothbrush with 2 extra brush heads(without batteries) Our company is a professional manufacturer for Dental Care products, specializing in Sonic Toothbrush, Toothbrush Sanitizer, UV Wand Sanitizer and other electric gift items. STONG is extensively recognized as a highly reputable manufacturer in Oral/Dental Care industry. STONG was awarded by SGS with ISO13485:2003 and ISO9001:2000.