---
title: kBluetoothHCIDataPacketHeaderSize
framework: IOBluetooth
role: symbol
role_heading: Global Variable
path: iobluetooth/kbluetoothhcidatapacketheadersize
---

# kBluetoothHCIDataPacketHeaderSize

## Declaration

```swift
var kBluetoothHCIDataPacketHeaderSize: Int { get }
```

## See Also

### Constants

- [kBluetoothHCICommandPacketHeaderSize](iobluetooth/kbluetoothhcicommandpacketheadersize.md)
- [kBluetoothHCICommandPacketMaxDataSize](iobluetooth/kbluetoothhcicommandpacketmaxdatasize.md)
- [kBluetoothHCIDataPacketMaxDataSize](iobluetooth/kbluetoothhcidatapacketmaxdatasize.md)
- [kBluetoothHCIEventPacketHeaderSize](iobluetooth/kbluetoothhcieventpacketheadersize.md)
- [kBluetoothHCIEventPacketMaxDataSize](iobluetooth/kbluetoothhcieventpacketmaxdatasize.md)
- [kBluetoothHCIMaxCommandPacketSize](iobluetooth/kbluetoothhcimaxcommandpacketsize.md)
- [kBluetoothHCIMaxDataPacketSize](iobluetooth/kbluetoothhcimaxdatapacketsize.md)
- [kBluetoothHCIMaxEventPacketSize](iobluetooth/kbluetoothhcimaxeventpacketsize.md)