1， good quality material    From real photos we took on the seen， materials， workmanship and quality are good.     Purple translucent material， no smell a little. 2， vibration intensity sufficient    Each vibrator use three button batteries， shock intensity from minimum to maximum freedom of adjustment. To maximum intensity is good.     However， the stimulus is big enough， it depends on personal feelings. Everyone body is different， certainly is not the same feeling. Some may think this stimulus is enough， some people will feel nothing feeling， hey! 3， waterproof design， easy to clean.