Product name: bluetooth speaker 
Product model: CJ-BS002 
Bluetooth version: V4.0 + EDR
Waterproof level : IPX5 
Chip: GFS2 
Support: Bluetooth version 4.0 and above
Channels: 3 (2.1) 
Battery capacity: 4400mAh 
Endurance time: 8H
Transmission distance : 15m 
Frequency range: 2.4GHZ-2.480GHZ
Sensitivity: -87DB <0.1% BER
Shell material: Plastic 
Size: 85 x D53mm 
Weight: 147.5g
Colors: red, yellow, blue, black
Feature: Can be used as power bank; Built-in FM and auto search station; handfree speaker phone; "Blinking Beats" illuminator; Support TF card.
Application: Computer, Mobile Phone, Portable Audio Player.
Packing: Paper + PVC.