The video showcases a Knight's sword, used by the Crusader army, which is 1 meter long and weighs 3.5 kilograms. The sword is flexible and has a unique feature of having 1-centimeter air ducts that make it flexible and add sharpness. The host tests the sword's sharpness by cutting through 500 milliliters of water without moving it from its place, which it passes with ease. He then cuts through 20 water bottles and 4 one-liter cola bottles in one go. The sword also passes through a chicken with bones without difficulty. The host is impressed with the sword's performance and declares it one of the sharpest swords he has ever used. The video ends with the host giving away the sword to one of the listeners and promoting a new song.
Here are the key facts extracted from the text:
1. The speaker is introducing a new topic, a Knight's sword.
2. The sword is used by the knights of the Crusader army.
3. The Ottomans fought against the Crusader armies for centuries.
4. The sword is about one meter long and weighs three and a half kilograms.
5. The sword is flexible compared to other swords.
6. The speaker has tried and tested all the swords so far, but this one is special.
7. The sword has a very nice aerodynamics.
8. The speaker is testing the sword's sharpness and durability.
9. The sword can pass through 500 milliliters of water without moving it from its place.
10. The speaker is testing the sword's ability to cut through multiple water bottles.
11. The sword can cut through 20 water bottles in one go.
12. The speaker is impressed with the sword's performance.
13. The sword is not currently for sale in the market.
14. The sword was specially designed and produced for the speaker.
15. The speaker is giving away the sword to one of their listeners.
Note: These facts are based on the provided text and may not be comprehensive or accurate.