Portable wireless Bluetooth speaker

Portable wireless Bluetooth speaker
Connection method: Bluetooth connection
Frequency response range: 100Hz – 20KHz
Signal-to-noise ratio: ≥ 75dB
Number of speakers: 1
Box material: Metal
Appearance size: 50 x 31mm
Power supply method: USB
Bluetooth version: 5.0
Built-in battery capacity: 100mAh – 300mAh (inclusive)