Cheap And Discounts Boyakang Sonic Electric Toothbrush 5 Cleaning Modes IPX7 Waterproof Smart Timing Dupont Bristles USB Charger Adult Wholesale. Buy Directly From Merchant Boyakang Factory Store Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.