Callmate v4.0 Car Bluetooth Device with MP3 Player, 3.5mm Connector, Audio Receiver  (Black)

My car allows only a 1Din system. My budget at the time of buying my car did not allow a bluetooth enabled system. 2 years down the line, I was searching for "something" which could 1)Wirelessly receive, accept/decline a call, 2) wirelessly play (preferably lossless) music via my car speakers (i've invested in an excellent set of speakers) 3) be able to change tracks if possible 4) keep down the budget within 1.5k...... Now.... that was asking for a lot.... started searching the internet... a...

My comments after using it for 3 months.
I am using this device in Swift with Nokia 730.
Advantages:
1. It needs a power supply. So no tension of charging any battery.
2. Connects automatically to my mobile with in 5 seconds of switching on my car.
3. Just 1 click on the call button and it automatically search MP3 songs & start playing it.
4. Press & hold right side button - automatically call to last dialled number.
5. When any sms comes it asks me whether I want to read it OR ignore.
6. I u...

I bought two of these. First one was used with OEM player of a GM Car and worked perfect. Second was used with OEM player of Mahindra and there was a constant (but low humming) mic sound. It was still decent for playing music and making calls....but I guess Mahindra and this product don't go well.