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Electronic：Yes Power Supply：Battery Powered High-concerned chemical：None Material：silicone+ABS Model Number：20070 Brand Name：Bokisoon Origin：Mainland China Number of Pieces：One Unit Item Type：Pumps & Enlargers Function：3-speed cycle + 4-speed pressure maintaining and sucking + one-button deflation Pressure level：0-35 kPa, 0-45 kPa, 0-55 kPa Waterproof grade：IPX7 (can be used in bathtub) Air pump：370 fully waterproof air barrier membrane + waterproof solenoid valve Barrel height：20cm Barrel mouth diameter：6.5cm Silicone ring diameter：2cm+2.8cm Working voltage：3.7V Charging time：2.5 hours Working time：2-2.5 hours Charging：USB magnetic charging Noise：less than 60db 1：penis extender 2：Pump for penis 3：Empty penis pump 4：Male enlarger 5：dick pump 6：dick enlargement 7：Cock enlargement 8：vacuum pump penis 9：super powerful vacuum pump

Electronic: Yes Power Supply: Battery Powered High-concerned chemical: None Material: silicone+ABS Model Number: 20070 Brand Name: Bokisoon Origin: Mainland China Number of Pieces: One Unit Item Type: Pumps & Enlargers Function: 3-speed cycle + 4-speed pressure maintaining and sucking + one-button deflation Pressure level: 0-35 kPa, 0-45 kPa, 0-55 kPa Waterproof grade: IPX7 (can be used in bathtub) Air pump: 370 fully waterproof air barrier membrane + waterproof solenoid valve Barrel height: 20cm Barrel mouth diameter: 6.5cm Silicone ring diameter: 2cm+2.8cm Working voltage: 3.7V Charging time: 2.5 hours Working time: 2-2.5 hours Charging: USB magnetic charging Noise: less than 60db 1: penis extender 2: Pump for penis 3: Empty penis pump 4: Male enlarger 5: dick pump 6: dick enlargement 7: Cock enlargement 8: vacuum pump penis 9: super powerful vacuum pump