B Class bluetooth connectivity

[Jakerook]

Good afternoon all. Would you be kind enough to give me some help. Can anyone advise what I need to get the bluetooth for the phone working on the A20 sound system. I believe it to be able. I have attached two photos of what I have under the centre arm rest. Many thanks

 

[Jakerook]

Should have said its a 2007. Thanks.

 

[GLK]

You'd need a bluetooth module - either OE or aftermarket Viseeoo

Mercedes-Benz B67875877 Bluetooth Adapter for sale online | eBay UK

Find many great new & used options and get the best deals for Mercedes-Benz B67875877 Bluetooth Adapter at the best online prices at eBay UK! Free delivery for many products!

www.ebay.co.uk

GENUINE MERCEDES VISEEO MB-2 BLUETOOTH PHONE ADAPTER CRADLE IPHONE SAMSUNG | eBay

Find many great new & used options and get the best deals for GENUINE MERCEDES VISEEO MB-2 BLUETOOTH PHONE ADAPTER CRADLE IPHONE SAMSUNG at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

One thing to remember - these are just for phone calls - you won't be able to stream music, or do any other modern bluetoothy tricks.
For that you would need to replace the head unit: