Foreo's ISSA 2 is a rechargeable electric toothbrush that combines micro-sweeps and a unique hybrid brush head to remove plaque, stains, and prevent tartar build-up and cavities. The brush head's inner PBT polymer bristles remove plaque build-up while the outer ultra-soft silicone bristles gently massage the gums and minimize abrasion on the teeth. Waterproof. PBT polymer and silicone bristles. Sonic pulse technology. Ergonomic design for hard-to-reach areas. 16 adjustable cleansing modes. Built-in timer. 3D flexible brush head. USB-chargeable. Each one-hour charge lasts up to 365 days of use. Available in Cool Black. Foreo Women's ISSA 2 Toothbrush - Black A great designer gift. Shop Foreo at Barneys New York.