NEXTLINK identifies with high-quality Bluetooth headsets. The very fact that SWAT and the like in many other countries rely on NEXTLINK products (customized, of course) speaks for itself. In this review, we present you one of their new products, part of the INVSIO line, designed for the consumer market, the B3.

Package Contents:
  • Hands-Free Headset
  • AC Adapter (with mini USB plug)
  • Two Exchangeable Soft Springs (large and small)
  • User’s guide


The design of the INVSIO B3 is both classical and high-tech and overall, it is very clear and simple, to which contributes the presence of only three buttons. The device is not the smallest or the lightest one (both titles belong to the G5), but it is a competitor for the rest of the new models of other manufacturers. There are two color solutions offered – black and silver.

The multifunctional TALK button (used for turning on/off, accepting calls, etc.) is located in the upper part. It is big, somewhat concave, and marked with the power logo, but it’s very easy to press even with one finger.

We have the volume control buttons on both sides. Although there are three relieved lines on each one in order to make them easy to find by touch, their  functionality isn’t marked. You will have to remember that if the headset is on your right ear, then up=volume up and down=volume
microphone is located on the front, and on the back, we have the

Only the TALK button is illuminated – in red and blue. The first color indicates an empty battery or charging mode, and the second blinks while in standby mode.


Connecting the device to a phone is standard. In order to enter pairing mode, the handsfree has to be turned off. Then, you need to press and hold the TALK button until it starts blinking (blue and red). The pairing password is 0000.

We were impressed with the rich functionality, achieved with the three buttons only.Normally, accepting, ending, or rejecting a call is done via the TALK button, rejecting is done by pressing it twice. The B3 supports call waiting (by pressing the TALK button for one second) and conference call (by pressing the volume up button for one second).

All these features would have been very useful if the volume controls had been designed better. The lack of feedback and the fact that they are not easy to press would make you avoid them. Muting/uniting the microphone is the hardest thing to do. You have to press and hold for 3 seconds both volume controls at the same time. It’ll take some time to get used to that. At least, you hear a beep every two seconds, once the option is activated. The headset keeps its volume settings when turned off, so that kind of makes up for the rest.



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