This product is a new technology to produce intelligent imported from Japan AV rods. Smart AV rods changed the traditional av rods need to manually adjust the vibration frequency of the drawbacks of using electronic sensing device automatically senses the vibration frequency to achieve the more deeply inserted， the more powerful vibrations ideal model. 

Rough about 3cm， use a length of about 15cm

【Ingredients】 senior medical rubber + electronic parts 

[Specification] a / box， rough about 3cm， use a length of about 15cm 

[Color] pink 

[Power] that use four batteries No. 7