Datexx InStage iPhone Silicone Stand and Acoustic Amplifier for iPhone 4/4S, Black - Speakers - Retail Packaging - Black The formation of the silicone stand naturally amplifies sound 400% just by inserting the cellphone into the case. Great for video conferencing, watching movies and videos, selfies from any angle, Facetime, etc. for hands-free enjoyment Sturdy case protects your iPhone 4 or 4S and positions it horizontally or vertically for easy viewing. No wires, batteries or electricity needed thanks to the unique design of the InStage speaker Cellphone easily pops into the InStage case for immediate enjoyment of enhanced music and sound