Small crystal Bluetooth speaker

Spec.：
Function Description: support Bluetooth connection, hands-free voice call, crystal night light
Bluetooth specification: Bluetooth 5.0
Transmission distance: 10M
Playback time: About 2.5h
Signal noise: ≥ 70dB
Frequency response: 180hz-18khz
Battery capacity: 400mah
Charging voltage: 5V / 500mA
Horn: φ 31mm4 Ω 3W
Product weight: About 110g
Shell material: ABS plastic + aluminum alloy + Crystal
Product size: 145 * 35 * 35mm