An amazing. compact silicone ring with 5 vibrational patterns- 1.25/3.25 cm (ring diameter)- 2 x 1.75/5.75 cm x 4.5 cm (overall)- 2.25 x 1/5.75 cm x 2.5 cm (stimulator)- Uses (1) AAA battery- Waterproof- Soft. lint-free pouch included