The black D900Mini model uses TWS technology to make wireless pairing easy for hassle-free entertainment. The model’s privacy call design allows only the main headphone to transfer voice signal. It is tastefully stylish with a lightweight and compact design that makes it comfortable to use and easy to carry. The model is designed with only one button that serves nearly all purposes including pairing, powering the device on and off or ending a call. The product’s price tag makes it a must buy especially if you are working on a tight budget.