Accessorize with these sexy gems. Attaches to most garments with patented dual magnet design. Intense vibrations with push button activation. ABS (stimulator, gem) ABS with Silver Plating (d233cor ring). Batteries included (3 watch, 6 included). US Patent 6-991-598 B2. 2.25″x .75″/ 6 cm x 2 cm (stimulator). 1.25″/ 3 cm (gem circumference).