Rated Power:4mW;
Bluetooth Transmission Distance   Appr:10m;
Bluetooth Version Bluetooth 4.2;
Music Time Appr:2.5H;
Talk Time Appr:2H;
Standby Time Appr:40H;
Charging Time Appr:1H;
Battery Capacity:400mAh;
Material:ABS + Aluminium alloy;
Earphone Size:23.6 x 16.3 x 23..7 mm;
Earphone Weight Appr:9g;
Total Size:φ32 x 81.15mm;
Total Weight Appr:70g