This device is made of soft silicone tubing and is NOT electrified.  If you enjoy inserting and even expanding or the full feeling inside the urethral wall, you might enjoy this expandable insert.  Insertable length is 9 inches.

The tip is solid and approximately 6mm in diameter and once inserted, you can inflate the tubing by squeezing the bulb to your desired sensation.  Tightening the screw will allow for inflation and unscrewing it deflates it.  Gently squeeze the bulb, as if you squeeze it too fast or hard it will inflate too quickly and not feel comfortable.  Give it a try before inserting to visualize what it will be doing inside the urethral wall.  

Use plenty of water based lube to ease the insertion.  Always wipe the tubing down with alcohol and wash with a good antibacterial soap and let it air dry before and after using.  This lessens the risk of any bacteria getting inside the urethra, which could cause infection and that is very painful, especially trying to urinate.