Bluetooth headphones Celebrat A15

"Bluetooth Chip:JL6936 Bluetooth Version:V5.0 Drive Unit:10mm Input Voltage:DC 5V Output Voltage:4.2V Impedance:32Ω±15% Frequency Response:20-10KHz Music Time:About 7-8H(70% Volume) Call Time:About 7-8H(90% Volume)" "1.Metal apperance, dust-proof decoration, uses sandblasting technology make earphones full of metal texture 2.Collar design, fashionable and simple collar can wear comfortable, release your ears 3.250H standby time, with 130mAh large capacity battery, meet you daily use"