Universal Wireless Bluetooth Headphone
ইউনিভার্সাল ওয়্যারলেস ব্লুটুথ হেডফোন
Use:Universal for bluetooth device（as Android/ios mobile phone）
Bluetooth version: 4.1
Job scope: > 10 meters (disabled)
Standby time: > 180 hours
Life time: > 3~4 hours
Charging time: 1 hours
Support agreement: A2DP, AVRCP, HSP, HFP
Frequency response: 20 hz 20 KHZ
