Stock product, there is no details data, the test for buyers' reference:
Weight: about 367g

The actual test of air pump performance is also very good,
12V voltage test, positive pressure 0.18Mpa, negative pressure maximum -80kpa.

24V voltage test, positive pressure blocking limit can be 0.25Mpa, negative pressure -82kpa,
24V voltage test flow is about 6L / minute.