Features: Supports 2.1 channel configuration, providing more 3D sound effects. Large power output, providing strong dynamic sound effects, suitable for outdoor, party and other needs. Can be inserted into USB drive, making it convenient to use. Bluetooth-compatible connection function, no need to be limited to connection, more convenient. Multiple inputs, supporting 3.5 interfaces, can connect various auditory devices. Small size design, easy to carry, suitable for various scenario such as family, travel, and gatherings. Specifications: Component: PCB+Metal Size: about 14.5x13.5x6cm/5.7x5.3x2.36inch Model: Bluetooth-compatible 2.1 Amplifier Multifunctional Amplifier Board Working voltage: double group AC18-26V Rate power: 80W+80W+80W Impedance: 4Ω~8Ω Response frequency: 20Hz-30KHz Package Includes: 1pc DX-2.1 Bluetooth-compatible Amplifier Board 1pc Remote note: Output shortcircuit is strictly prohibited. Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.