Amazon.com is the only authorized dealer selling MaximalPower brand products. Please make sure your item is ONLY sold and shipped by Amazon.com! All other marketplace vendors are selling counterfeit products that do not perform the same， and/or are not covered by our MaximalPower Warranty To fit most of cell phones， Apple iPhones， Samsung smart phones， MP3， MP4， iPod， GPS and PDAs etc. Width of suitable devices: 3.5 inches 1 Year warranty Only distributed by amazon.com， all other marketplace sellers following this item are offering counterfeit non maximal power item and not covered by our warranty New Cell Phone Accessory: Universal Bicycle Bike Mount Holder Bracket Features: Quake-proof two clamp arms in bracket 360 degrees rotating support holder To fit most of cell phones， Apple iPhones， Samsung smart phones， MP3， MP4， iPod， GPS and PDAs etc. Easy to install. Width of suitable devices: 3.5 inches 100% Brand NEW Works in the following devices: APPLE iPhone 4 5 5C 5S SAMSUNG Galaxy S3 S4 Note AND Other handheld Device: GPS / MP3 / MP4 / PDAs etc.