NB Wireless Bluetooth & NFC Speaker with hands free function

Bluetooth version:2.1+EDR
Bluetooth profile:HPF V1.5,HSP V1.2,A2DP V1.2,AVRCP
Working distance:Up to 10 meters (33 feet)
Omnidirectional microphone
USB 5V Ac power supply   
Power:3W*2
2*40mm NdFeB full band speaker units
3.5mm audio jack
Built-in 1800Amh rechargeable lithium battery
Up to 20 hours playing time,it depends on volume and music type.
About 6 to 8 hours charging time.
Stored temperature:-10°C to 55°C
Pairing passkey or PIN:0000
Accessories:User manual,Warranty card,USB data line,Audio cable.
Dimension:122mm×60mm×48mm