Does BMW X5 has Speaker Brand?

The X5 comes with a 464-watt Harman Kardon sound system and the Driving Assistant package that bundles AEB, LDW, RCTA and blind spot monitoring. 

The BMW X5 is priced from:

xDrive45e M Sport - RM 440,745
xDrive40i M Sport - RM 618,800  

The X5 shares a market with:

Volvo XC90 - Starts from RM 373,888  

Yes, BMW X5 is available in Seat Features(Rear). The available Seat Features(Rear) variants are: 2019 BMW X5 xDrive40i M Sport, 2019 BMW X5 xDrive40e M Sport.

No, BMW X5 isn't available in Rear Airbags.

No, BMW X5 doesn't have Rear Airbags.

Here are the Model and variants of BMW X5:

Yes, BMW X5 has Front/Rear Curtain Airbags, which are: 2019 BMW X5 xDrive40i M Sport, 2019 BMW X5 xDrive40e M Sport.

Yes, BMW X5 has Parking Camera, which are: 2019 BMW X5 xDrive40i M Sport, 2019 BMW X5 xDrive40e M Sport.

Here are the Auto Start/Stop and variants of BMW X5: