【Auto Clamping & Smart Alignment Charging】The bottom tray will automatically adjust to align the charging coil intelligently according to your phone size. The more precise the coil position, the more efficient the charging. Just put your phone in, the arms and the bottom foot of the wireless car charger will clamp automatically. Easy to release your phone by pressing either of the side buttons. Power off delay, the phone can still be released 2-3 times after car flameout.