---
title: maximumUpdateValueLength
framework: corebluetooth
role: symbol
role_heading: Instance Property
path: corebluetooth/cbcentral/maximumupdatevaluelength
---

# maximumUpdateValueLength

The maximum amount of data, in bytes, that the central can receive in a single notification or indication.

## Declaration

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

## Topics

### Related Documentation

- [updateValue(_:for:onSubscribedCentrals:)](corebluetooth/cbperipheralmanager/updatevalue(_:for:onsubscribedcentrals:).md)