I: Structure
Tiaodan have an egg-shaped part， some wired， some wireless， wireless Tiaodan usually have a string， you can pull the string after use to Tiaodan out from the vagina or anus， or it may be trapped inside. Often exposed in the train or on the street in order to win the eye. It should be taken to prevent secretions out.

Two: Principle
By the motor plus the effect of vibration caused by the eccentricity of copper as its basic principle， the use of cylindrical motor (Bar Type) axis extending out of place， eccentrically arranged mining， such as half-cylinders or school type， when the rotation of the motor causes the center of gravity Offset (around motor core rotation)， it causes vibrations Tiaodan feeling. Since the great tradition of the electromagnetic noise coil (Cored Motor)， so now gradually toward wireless ring motors (Coreless Motor) development， also started with a brushless motor. The quality of the decision itself， the speed of the motor (vibration force)， volume， life and price.
III: materials and appearance
Tiaodan rubber， plastic， metal， silicon， and other materials， surface smoothness， the market has a lot of cute styling and a variety of different colors Tiaodan， increase the user's taste.

Four: Type
Tiaodan types: single Tiaodan， double Tiaodan， double switch double Tiaodan， wireless Tiaodan， cable Tiaodan， waterproof Tiaodan， frequency Tiaodan， stepless Tiaodan， barbed Tiaodan， remote Tiaodan， metal Tiaodan， LCD Tiaodan long Tiaodan， short Tiaodan like.

Five: Use
1. Properly install the battery

2. Before use with 75% alcohol scrub sterilization of medical products， products coated with suitable lubricant (recommended used together with condoms)

3. Insert the body， start switch， until the climax

4. Turn off the switch and exit from the body.

5. After washing storage.
Six: Caution
1， should be disinfected before use;

2， before use lubricate the vagina;

3， after use to dry storage;

4， the battery usually bring it up to store;

5. Do not Tiaodan stuck too;