This model is in strict accordance with the requirements of the outdoors - waterproof & dustproof - both needed for a motorcycle speaker. The sound is still great at high speed! Anti-slip feature - made from premium materials. Adjustable bracket to fit perfectly. 3.5mm Audio Jack. SD Slot Size for microSD card. 

• MATERIAL AND COLOR: Resilient metal - Silver.

• HIGH-QUALITY AUDIO: Using our high-end audio processing chip to provide you with better quality sound quality. Dual speakers.

• BLUETOOTH: Bluetooth can connect within 15 meters. Wireless Bluetooth connection (can connect up to 50 feet away)

• FM RADIO: Electronic tuning radio, 18 storage stations. LED display and FM Radio

• MOTORCYCLE MADE: Plugs directly into your motorcycle battery. Specifically designed to clip onto your handlebars and produce a sound that can be heard even at high speed! It can also be used on quad-bikes, dirtbike, etc.