---
title: uuid
framework: corebluetooth
role: symbol
role_heading: Instance Property
path: corebluetooth/cbattribute/uuid
---

# uuid

The Bluetooth-specific UUID of the attribute.

## Declaration

```swift
var uuid: CBUUID { get }
```

## Discussion

Discussion This property is a 128-bit UUID that identifies the attribute. For more information, see Core Bluetooth Programming Guide.