Amazon: speaker fuse BOSS Audio KIT2 8 Gauge Amplifier Installation Wiring Kit – A Car Amplifier Wiring Kit Helps You Make Connections and Brings Power to Your Radio, Subwoofers and Speakers 3.9 out of 5 Fusebox Speaker - FUSEBOX - Brilliant Promotional Products This speaker is made of silicone and ABS speaker and is also a phone holder. The suction cup attaches to the back of your phone. Flip the on/off switch to prevent battery drainage. The uilt in battery is rechargeable by USB port and can be used with most audio products. This speaker delivers powerful sound with a 3.5 mm audio jack.