जल साँस लेना परीक्षण

• 00:03
• 00:20
• 00:36
• 00:53
• 01:10
• 01:27
• 01:44
• 02:00
• 02:17
• 02:34

Self-made inhalation bottle test. The bottle contains clean water.

• 752
• 02:48