Wireless Charging, Magnetic Tank Bag for GPS, Cell Phones, and Amplifiers - Rugged and Waterproof - 5" L x 3" H X 1" - Model shkChrgl128-reg - Black It is a 3-coils design that offers much wider charging area. It provides lot of flexibility in positioning your device. Three transmitting coils more effectively cover the wireless charging area for full directional power to ensure easier alignment and most efficient charging. This quality leather case will Magnetically attach itself to any metal part of your motorcycle or snowmobile so you have a safe and secure solution for your cell phone, amplifier, iphone etc. There are 4 magnets so your case wont budge under any condition. front pocket has a clear opening for a gps, cell phone, amplifier, etc super cool design to prevent the device overheat large zipper pocket will fit on all motorcycles / snowmobiles with medal gas tanks has two magnets for good holding power SHARK MISSION - SharkMotorcycleAudio was established to serve the needs of motorcycle and snowmobile users, and today we are one of the industry's top suppliers of motorcycle audio products. Our success has been built on a simple principle: Provide top quality and innovative products and treat every customer like they were a member of our family.