The Case Logic Bluetooth Audio Cassette Car Adapter can connect wirelessly to Bluetooth-enabled smartphones and tablets. 
Case Logic Bluetooth Adapter with Mic and a Pair of Earbuds:
Bluetooth wireless adapter
Built-in mic
Makes devices compatible with Bluetooth 3.0
For speakers, sound system or headphones with a 3.5mm jack
Can connect wirelessly to Bluetooth-enabled smartphones and tablets
RF range: 33'
Earbuds included
Noise-isolating ear buds
Tangle-free flat cable
10mm speaker