• Compact 4-inch heavy-duty external speaker for CB radios, scanners, and two-way radios.
• Designed for truckers, off-roaders, and professionals who need louder, clearer audio than built-in radio speakers.
• Rugged build with mounting bracket for easy installation in vehicles, cabs, or workstations.
• Plug-and-play design with a standard 3.5 mm mono plug for most radios with an external speaker jack.

Features

• Heavy-duty construction built to handle vibration and daily use.
• Clear, loud audio output — ideal for noisy environments (trucks, construction, off-road).
• Mounting bracket & hardware included for secure, adjustable positioning.
• Long 6 ft (1.8 m) audio cable gives flexibility for speaker placement.
• Standard 3.5 mm mono plug fits most CB radios, ham radios, and scanners.
• Compact size — easy to fit on dashboards, overhead consoles, or side panels.

Specifications

• Speaker Size: 4 inches (10 cm)
• Power Handling: 20 W (max)
• Magnet Weight: 6 oz
• Impedance: 8 Ω (typical for CB/ham radio speakers)
• Cable Length: 6 ft (1.8 m)
• Connector: 3.5 mm mono plug
• Mounting: Adjustable metal bracket with included screws/bolts
• Color: Black
• Compatibility: CB radios, ham radios, scanners, two-way radios with external speaker jack

What's in the box

• 1 × PT-811 Pro Trucker 4" Heavy Duty External Speaker
• 1 × Adjustable metal mounting bracket
• 2 × Mounting screws/bolts with nuts & washers
• Pre-attached 6 ft (1.8 m) audio cable with 3.5 mm mono plug
• User/installation instructions (basic setup guide)