High-end subwoofer fabric couplet speaker, birthday gift music player small bluetooth speaker

Connection method: Bluetooth connection
Frequency response range: 100HZ-20KHZ
Signal-to-noise ratio: ≥75dB
Number of speakers: 2
Effective distance: 10 meters
Box material: ABS
Appearance size: 77.4X77.4X160.5MM
Power supply: USB
Built-in battery capacity: 1200mAh-2000mAh (inclusive)
Rated power: 10W
Rated voltage: 3.7V
Speaker unit: 4 ohm 5 watt x2
Shell process: fabric
Additional functions: card insertion, waterproof, dustproof, drop-proof
Whether built-in battery: built-in battery