11 VIBRATION MODES, 5 THUMPING SPEEDS, BOOST MODE, 100% WATERPROOF, SOFT FEEL TM SILICONE, FAST-FILL SMART CHARGE. One end delivers tantalizing thumping, the other brings the powerful vibrations. Insertable Dimensions: 4.8 inch x 1.4 inch or 4.8 inch x 1.5 inch