Pyle PLMCA90 1200 Watts Motorcycle/ATV Amplifier with Dual Handle-Bar Mount Weatherproof Speakers, MP3/iPod Input, USB Charger - Set of 4 300 Watts X 4 Channel Micro Amplifier with Wire Harness - Chrome Stainless Universal Handlebar Audio Mount - Amplifier Dimensions : 3.05''(W) x 1.19''(H) x 5.71''(L) 3.5mm Stereo Input Jack, Easy Connection to the Output of Other Audio Devices Like D/MP3/iPod - 12 Volt T-TAP - Sold as: Unit Quad Chrome Aluminum Bullet Style 3'' Speakers / Neodymium Magnet Structure - USB charger &amp; Satellite 5V plug Two Pairs of Chrome Clamps - Easy Chrome Stainless Mounting Brackets and Accessories included Universal Handlebar Mount Rotary Volume Control - Speaker Dimensions: 2.5''(W) x 2.5''(H) x 3''(L)