1,Marine Grade: The high power, rust proof and waterproof construction speaker grille and heavy duty box design ensure the speakers can withstand harsh outdoor environments. 2,Powerful Performance: The speakers are compact in size but have a loud sound! Includes 100mm air suspended woofer and 25mm tweeter, professional and reliable. 3,Stable and Reliable: Designed to be used with heavy duty waterproof speakers, the box can provide all round sound entertainment with radio, and can withstand the challenges of off road and outdoor environments. 4,Weather Resistant: These speakers are made from durable ABS and metal materials, with rugged housing construction, fabric surrounds, and molded ABS mesh grilles that can resist damage from sunlight. 5,Easy Installation: The 4inch marine surface mount box speakers come with brackets and bolts that allow for easy installation in limited spaces. They can be rotated and adjusted to the appropriate angle for installation. Item Type: Marine Waterproof Speakers Material: ABS, Metal Power Handling Capacity: 50X2 watts Contains 100 mm air suspended woofer and 25 mm tweeter Maximum Power: Each unit can handle 50 watts Frequency Response: 80-20000Hz Impedance: 4Ω Efficiency: 89dB Speaker Size: 4 inches Installation Depth: Approx. 42mm or 1.65in Applications: Ideal for boats, ships, UTVs, ATVs, trucks, golf carts, Powersport, motorcycles, RVs, cars and off road vehicles. 2 x Speakers 1 x Installation Package (8 Accessories) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.