The FREE wireless earphones are the essence of an advertising gadget. Their distinguishing feature is the possibility to mark them using any technology. They come in a handy, plastic case stressing their appeal even further. Technical specification: Bluetooth 4.2, earphone battery 55 mAh, operating time 4–5 h, standby 120 h, charging time 2 h, earphone dimensions: ø 20 x 23 mm, cable length 590 mm.