brand new and high quality Features: With diaphragm design, good effect. Support FM radio, support USB/TF card/AUX input. Powerful allows you to feel the shock of heavy metal music outdoors. Built-in high-sensitivity microphone, supports hands-free calling, calls crystal clear. Waterproof, dustproof, and shock resistant, it can be used in harsh environments (such as outdoor sports). Bluetooth-compatible transmission supports most Bluetooth-compatible devices on the market and is suitable for most mobile phone / tablet with Bluetooth-compatible function. The fire line has its own insurance, and the host machine has automatic power off for protection function. When the voltage is unstable and the input voltage exceeds 16V, the sound will be automatically disconnected to protect the circuit from influence, safe and reliable. Suitable for motorcycles with handlebar distance of 25~28cm(9.84~ 11.02in) and handle diameter of 2~2.2cm(0.79~0.87). Perfect gift for yourself or your friends. Specification: Materials: ABS+metal Voltage: 12V Output power: 7W Transmission distance: about 8~10 meters Wiring: red positive, green negative, black connect to ACC. Size: app.20.5x6.8cm/8.07x2.68in Color: Golden Quantity: 1set Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Bluetooth-compatible Speaker 1 x Instruction Manual 1 bag x Screws 2 x U-shaped mounting brackets 1 x Package box(other accessories demo in the picture is not included.)