They say this is for Android Smartphone an ipad, so MID9742, but it might fit on the MID7042, MID7015/15a or MID7022 models.
What is does have:
Whether you are at the work or on-the-go, connect wirelessly and enjoy music and movies through the CSMP135 Bluetooth Stereo Speaker. Sleek, slim and portable, the innovative CSMP135 has a rechargeable lithium battery with Bluetooth capability that looks and sounds great anywhere. Auto-pairing and linking feature makes Bluetooth feature easy to use and set up to any Bluetooth enabled device.
Easy Bluetooth pairing
Built in rechargeable battery
3.5mm stereo line-in jack
Sleek modern design
Great for office or home
Portable and compact for travel
Cost: $29.24 on Amazon Prime (2-day free shipping)