1. [Compatibility] is Samsung Tab A8.4T307. Please confirm this model before buying.2. [Protection of the screen protector] 3 layers of the total front and rear protective boxes, combined with 1 layer of soft silicone and 2 layer of hard PC front frames and rear lids, providing a perfect protective tablet computer against accidental drops, scratches, impact and dust Essence3. [360 rotating brackets and hand bands] 360 rotatable foldable brackets provide multiple angles to enjoy the most comfortable keyboard and movie viewing. The 360 rotatable tone strap allows you to easily hold or use a tablet.4. [Moving and adjustable shoulder straps] adjustable and moving shoulder straps can help you carry tablet computers conveniently at work, travel or outdoor activities at a demonstration or meeting. It can be connected to any two holes in the PC cover to carry the device vertically or horizontally like allowing bags, and even hang it on the head or where you want it on the car seat.