> For the complete documentation index, see [llms.txt](https://help.coinpocket.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.coinpocket.io/wallet-faq/btc-wallet/what-is-utxo.md).

# what is UTXO

UTXO is an abbreviation of “Unspent Transaction Output”. Customize UTXO, that is, when you send transactions, you can choose which UTXOs you prefer, use a more economical UTXO combination, or assign a specific UTXO. Moreover, CoinPocket supports lower gas fee settings. With the combination of gas fee setting and custom UTXO, Users can stop worrying about "gas fee insufficient". Users can transfer even the last Satoshi bitcoin. Any Satoshi bitcoin will not waste in the daily transaction or the last transaction.。


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