Features:

Waterproof ,shockproof ,dustproof ,level up to IP56.
After 15 minutes without any operation since you powered on ,the product will shut down automatically
Wired/wireless audio signal transmission
Built-in player for audio files from micro SD card
Battery capacity 1200mAh
Radius of operation up to 10 m
waterproof sealed speaker ,and it 's 5W speaker ,gives you much better quality stereo experience.

Specification:

Bluetooth version: V5.0
Frequency: 2.402-2.480GHz.
Maximum output power: 3W
MIC sensitivity: -32db.
Receiving sensitivity: Better than 82dBm.
Distance: 10meters.
Charging voltage: 4.8V -5.5V DC.
Working voltage: 3.7V -4.2V DC.
Battery capacity: 1200MAH.
Working time:4-5 H
Color:Red,blue,green

Packing list:

1x mini bluetooth speaker