Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
fitbit 's failure to enforce any right or provision of these terms will not be considered a waiver of such right or provision . 

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. OPTIONS: ["Choice of law", "Jurisdiction", "Arbitration", "Unilateral termination", "Limitation of liability", "Contract by using", "Unilateral change", "Content removal", "None"].