入珠就是将珠子植入男性阴茎皮下组织，待其伤口愈合，勃起时，珠子凸于阴茎表面。当男女做爱时，固定的珠子在男性阴茎抽送之间，珠子就像钟摆般在阴道内拔动，珠子凸点在抽插时直接摩擦刺激女性阴道壁G点，女性在直接摩擦按摩刺激之下交互作用，产生急促阴道收缩，使女方达到连续高潮，推上极致高峰

4 mins 22 secs

1 min 3 secs

3 mins 29 secs

10 mins 25 secs

35 mins 33 secs

5 mins 9 secs

1 min 14 secs

1 min 51 secs

30 secs

1 min 36 secs

1 min 8 secs

5 mins 24 secs

5 mins 49 secs

54 secs

5 mins 22 secs

18 secs

34 secs

5 mins 3 secs

6 mins 49 secs

14 mins 47 secs

6 mins 56 secs

7 mins 49 secs

42 mins

13 secs

15 mins 19 secs

8 mins 30 secs

4 mins 15 secs

2 mins 3 secs

10 mins 12 secs

5 mins 3 secs

27 mins 38 secs

13 mins 43 secs

19 secs

4 mins 41 secs

6 mins 50 secs

59 secs

3 mins 17 secs

52 secs

20 mins 46 secs

9 mins 40 secs