Thank you for purchasing headset with bluetooth wireless technology. Feature High-grade leather headphone sheath and ear pads Foldable and portable carrying Breathable and punching soft ear pads Build-in microphone and hands-free Support wired connection with line-in port Clear sound gives you long-term comfort Powerful and rich bass speaker brings you amazing audio enjoyment Exquisite sound, good high frequency extension, rich in details High degree of separation, and full stereo felling Specifications Speaker diameter: 30mm Frequency response: 20Hz-20KHz Impedance: 32 Bluetooth version: 3.0+EDR Pairing name: Ausdom M07s Charging port: Micro USB Standby time: More than 90 hours Talking time or Playing time: About 8 hours Charging time: About 2-3 hours Battery type: Build in 250mah rechargeable lithium batter Package Content Bluetooth headset Micro USB charging cable 3.5mm audio cable User manual