- 10 vibration patterns - Velvety smooth texture - Whisper quiet technology - Waterproof - Requires 2 AAA Batteris The Ai Long bullet is made from Aluminum for the ultimate designer pleasure experience. Simplistic yet tactile with its rippling ridges, this long bullet has 10 vibration modes and can be cooled or hearted easily for added sensation. Simply push the button at the base to scroll the settings and hold for two seconds to turn off. PRODUCT SPECIFICATIONS MATERIALS: Aluminum SIZE: 144(L)x17.5(D)mm FUNCTION: 10 Functions WEIGHT: 65g 100% Waterproof Phthalate free