Product info:Material: Aluminium alloy, ABSPower: 0.5 A, DC 5 VBattery capacity: 250 mAhInstructions:1. Put clip into the hole correctly and tight up clockwise, lock down silicone clip.2. Clip the holder clip in air vent (or stick on dashboard).3. Press the button which on the left, the arm will stretch automatically.4. Lay the phone flat and touch the positive button, the arm will clamp automatically.Package includes:1x Automatic sensor car phone holder1x Sucker stand1x Air outlet bracket1x USB charging cable1x User manual