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• Transparent tube made of medical ABS is 100% safe to human.
• Control using only 3 AAA batteries(not included) requires no handle or charge.
• 3 ajustable suction to meet your different needs.
• This massager pump promotes the compensation of the central nervous system, perfect for improving impotence.
• Assemble this vacuum pump within 5 minutes using the simple instruction provided for your convenience.