Iroha Rin-Akane Body Massager from Tenga. The Iroha Rin's shape is easy to hold and the soft spherical tip provides brand new sensations. Simple one button control cycles through 4 vibration modes. 3 vibration and 1 pulsation. Fully waterproof vibrations. <br /><br />Size 1.38 inches in depth by 1.38 inches in width by 5.83 inches in height. Materials body safe silicone, ABS plastic. Battery powered vibrator requires 2 AAA batteries, not included. Running time approximate 4 hours maximum strength. Waterproof vibrations up to 20 inches.