Size:9*9.8*3.5CM         PACKAGE SIZE:11*14.5*4.5CM                             CTN SIZE:   46.5*23.5*31CM   40PCS/CTN                                 GW:7KGS  NW:8KGS  Wireless transmission distance：CLASSⅡ
Support agreements：A2DP/AVRCP/HFP/HSP
Product Power：500MAH
Working voltage：3.7-4.2V
Charging voltage：DC-5.0V
Charging hours :2.5H                    
Speaker impedance: 4Ω 3W    
Frequency distortion：<10%     
Senstivity：85DB
Working hours：4H（based on 80% Volume）