Specifications of Yison A9 Bluetooth Wireless Headphone

Specifications:

• Best Working Distance: <5 meters
• Frequency Response: 20Hz-10KHz
• Wireless Version: V5.0
• Drive Unit: 40mm
• Battery Capacity: 3.7V / 300mAh (Lithium Polymer Battery)
• Working Frequency: 2402-2480MHz
• Impedance: 320Ω ±15%
• Transmission Distance: 10 meters
• Sensitivity: 107dB ±3dB
• Input Voltage: Micro USB / DC 5V / 500mA
• Charging Time: About 2-3 hours
• Play Time: About 8 hours (at 70% volume)
• Call Time: About 8 hours (at 90% volume)
• Standby Time: About 90 days (2 months)