1. Traditional bottle opener: Insert the bottle opener into the mouth of the bottle, press down hard, and pull up to open the bottle cap.

2. Twist-cap bottle opener: Aim the bottle opener at the mouth of the bottle, secure it, and twist it hard to open the bottle cap.

3. Wrench bottle opener: Insert the bottle opener into the mouth of the bottle, close it, and pull it upwards to open the bottle cap.

4. Bottle opener with fountain device: Insert the fountain device into the mouth of the bottle, press it firmly, then align the mouth of the bottle with the cup and press the switch.

5. Pull-tab bottle opener: Insert the bottle opener into the mouth of the bottle and pull down hard to open the bottle cap.

6. Electric bottle opener: Fix the bottle opener on the bottle cap and press the switch to automatically open the bottle.

7. Flying cap bottle opener: Fix the bottle opener on the bottle cap and press the switch to pop up the bottle cap, which is convenient and fast.