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Function explanation:
1. The upper mouth can be clamped for stretching adjustment, which can effectively clamp bottles of various calibers;
2. It is not automatically adjusted and needs to be adjusted manually;
3. The stretching adjustment range does not mean that a bottle with a maximum diameter of 100mm can be placed, or
It depends on the diameter of the whole cup holder base is 83mm, that is to say, it can place the bottom at most
The water cup with a diameter of 83mm can be larger if it has a special shape.