Audible Rush Jam-Lite Bicycle Speaker for iPhone, iPod, Android, and MP3 Players with Volume Control and Storage for Cell Phone or MP3 Player Internal stereo amplifier for exceptional sound clarity and high volume- 100% satisfaction guaranteed Front panel volume control and power indicator for rider safety and convenience Secure quick release mount- small, out of the way when not in use- solid attach better than Velcro straps Case protects from shock and weather-fits all iPhones (including the iPhone 6), iPods, MP3 players and almost all Android phones up to 5.4" long (including Samsung Galaxy S4) Only 2.3" thick (compare to others at 4")- Weighs 7.3 oz (about 1/2 pound) with mount and batteries (compare to others at 16 oz or 1 pound)