Having replaced a great Inforad V3 having passed away after years of good service (the remote GPS antenna socket allowed to place discreetly under the dashboard), by a K2, it is disappointing diodes are invisible in the light the day, the alert is rather unpleasant and it is impossible to discriminate a fixed camera in a monitored area often. Autonomy does not exceed two hours, but very sensitive when it works perfectly connected lallume cigar yet well hidden at the gearshift, with a heat reflective windscreen. Regretting the V3 I chose the V4 with clearly identifiable light signals, the eyes are immediately drawn to the illusion of movement given by the LED (red presence of a fixed camera, orange danger zone), it n ' is not helpful to the sound. I find it regrettable INFORAD has abandoned this concept, this equipment is no longer manufactured. So much for its high quality. Now the battery has a battery life of ± 4 hours after it's lights out! It is then possible to use the cable to supply both the battery and the device. But as there is no switch, you must disconnect the device before that the battery then reconnect it. If this is not done, the remaining electrons do not allow a correct restart of the sensor and the GPS satellite search will be infinite ... But the big problem is the update under W7. The driver of my K2 does not suit him, we must download another recommended by the VAS Inforad UK, now the V4 updates without problems, but the K2! Solution found an old computer running W98, and here everything works both devices are recognized ... With W 10 these problems be resolved? After all these disappointments of SHIFT that can taste the users (see other comments), I end up with a device that deserves 5 stars only him, but I can not do without the unsightly power cable for cigarette lighter autonomy reasons. In all cases, the reliability of information is more reliable than my TomTom Go 600 with calamitous promising updates napportent nothing more. I use these devices for years only to overcome a possible blunder, 5 Km / h in a nice straight line unobstructed may forget to watch the meter.
