Bluetooth Transmission, Free Connection: Utilizing Bluetooth 5.1, it provides powerful and stable signal transmission and operates with low energy consumption. It can simultaneously connect to two audio sources, allowing them to play in turn Four Playback Modes, Five Music File Decodings: It supports Bluetooth connection, SD card playback, U disk playback, and AUX audio playback. It also decodes lossless FLAC, APE, MP3, WAV, and WMA music files Portable Design for On-the-Go: Featuring a handheld strap design, it is easy to carry and convenient to hold Tri-frequency 5.1 Sound: With ultimate high, mid, and low-frequency units, including 2x66mm high-frequency speakers, 2x78mm mid-frequency speakers, and a 119mm low-frequency speaker Unimaginable Five Speakers with Dual Diaphragms: Five speakers with powerful dynamics and a low-frequency diaphragm create a 3D HIFI stereo sound, providing a 360-degree surround sound experience All-Weather IP67 Protection: Upgraded IP67 waterproof and dustproof body, resistant to sand, dust, heavy rain, and even water immersion. Enjoy music effortlessly indoors and outdoors Ingenious Design: Combining knobs and buttons, it facilitates easy switching between Bluetooth and wired connections, opening up a convenient new chapter in life Digital Amplifier, High-Resolution Music: With 100W horn power, including an exclusive subwoofer and two high-frequency, two mid-frequency, and two exclusive light-transmitting diaphragm speakers, it delivers clear high tones, rounded mid-tones, and impactful low tones that are visually striking Equipped with Wireless Microphone: Comes with a wireless microphone with a range of up to 10 meters. It starts singing as soon as it is turned on, without the need for pairing, providing a wireless singing experience without constraints Standard 3.5mm Jack Connection, Compatible with Various Devices: Supports AUX audio cable connection, compatible with most tablets, smartphones, and other digital devices Specifications: Output Low-Frequency Horn: 4Ω 50W*1 High-Frequency Horn: 4Ω 15W*2 Mid-Frequency Horn: 4Ω 10W*2 Input Sensitivity: 400mV Separation: ≥90dB Signal-to-Noise Ratio: ≥80dB Operating Voltage: DC 7.4V Battery 18650: 12000mAh Battery Working Time: 6-8 hours Total Power: 100W Low-Frequency Horn Size: 119mm Mid-Frequency Horn Size: 78mm*2 High-Frequency Horn Size: 66mm*2 Diaphragm Size: 125*124mm2 Bluetooth Version: 5.1 Bluetooth Solution: Jieli Amplifier Model: Low-frequency: MD9840, High-frequency: MD4225 Main Control: AC6921A Machine Size: 507*188*230mm Weight: 5500g