When you open the SafePal wallet and look at your Bitcoin balance, you see a number. For this example, let's set the balance at 100 BTC. Though the balance is an intact number, your Bitcoins are actually comprised of multiple UTXOs. You may have two UTXOs worth 50 each, four UTXOs worth 25 bitcoin each, or a set of UTXOs valuing 32, 10, 21, and 37 bitcoin. The amounts for each UTXO don’t matter, but they must add up to your total balance. Let's assume that you want to buy a house that costs 35 bitcoin, and your wallet only contains UTXOs equaling 15, 17, 28, and 40 bitcoin each, then you will have to pay the 40 bitcoin UTXO because you don’t have one UTXO valued at precisely 35 bitcoin. In this case, the network mints two new UTXOs: one valued at 35 bitcoin, one worth 5 bitcoin. The car dealership receives the 35 bitcoin UTXO while you receive the 5 bitcoin UTXO as change. You may also spend the 17 and 28 bitcoin UTXOs and receive 10 bitcoin as your change. A transaction may use any combination of UTXOs; however, you don’t have control over which ones. Just as you can split a UTXO into separate instances, you can also combine them in larger transactions, creating fewer of them on the network.