Feature:1. Colorful flowing light effect: Beautiful and fashionable, the colorful light effect flows with the beat of the music, providing a dazzling audio-visual experience.2. 3D HIFI stereo sound: The alloy large diaphragm creates a 3D HIFI stereo sound, 360-degree surround sound, creating a home theater-like auditory enjoyment.3. Dustproof and waterproof design: The hidden rubber plug hole is sealed, dustproof and waterproof, simple and beautiful.4. BT 5.0: Stable and fast BT 5.0 technology, built-in high-clear microphone, intelligent noise reduction, making phone calls and voice chats as clear as face-to-face.5. Audio line function: Stable and fast audio line function, you can use the audio line to connect to the computer, TF card expansion or U disk expansion playback.6. Four-sided nylon waterproof cover: Protects the speaker and increases durability.Specification:Features:Colorful flowing light effect: Beautiful and fashionable, the colorful light effect flows with the beat of the music, providing a dazzling audio-visual experience.3D HIFI stereo sound: The alloy large diaphragm creates a 3D HIFI stereo sound, 360-degree surround sound, creating a home theater-like auditory enjoyment.Dustproof and waterproof design: The hidden rubber plug hole is sealed, dustproof and waterproof, simple and beautiful.BT 5.0: Stable and fast BT 5.0 technology, built-in high-clear microphone, intelligent noise reduction, making phone calls and voice chats as clear as face-to-face.Audio line function: Stable and fast audio line function, you can use the audio line to connect to the computer, TF card expansion or U disk expansion playback.Four-sided nylon waterproof cover: Protects the speaker and increases durability.Specification:Optional color: Black / Blue / Green / IndigoMaterial: ABSBattery capacity: 1800mAh lithium battery BT version: 5.0Speaker: 5W*2 Transmission distance: about 10m Frequency Response: 100Hz-20KHz Signal-to-noise ratio: ≥90dBOperating voltage: 3.7V Distortion: 1 %Charging voltage: DC5V Charging interface: Micro USBTalking time: about 3hMusic playback: about 3.5hStandby time: ≥30 daysCharging time: about 2.5h Waterproof: IPX5Product size: 224*70*72mmProduct weight :590gPackage size: 246*74*74mmPackage weight: 650gPackage list:1* Speaker1* Charging Cable1* Instruction manualPackage List:1* Speaker1* Charging Cable1* Instruction manual