Of course, I have studied the market for several months, made comparisons, and am already excellent user of hi tech products. I tested everything quickly. After carefully reading the user manual! The object meets the promises made on presentation videos by different testers of this type of product. Excellent value for money. All features are "top". The photos and videos that I realize are really of high quality. Phone data management, on top. By cutting the WiFi and blue-tooth, I manage to prolong the battery life during a 48h average. My main applications, "business calendar pro" this works perfectly with Android and syncs perfectly with my Google account. Just a little heavier and a little warm ears. But for that price, the device is perfect.