1-.Cami army design. 2-stereo bluetooth headphone with mic, 2.Built-in 40mm speaker. 4.CE/FCC/BQB 2013bluetooth headphone ... :Bluetooth V2.12,Wireless Frequency Range:2.4GHz3,Transmission Distance:10m4,Charging time:up to 2 hour5,Talk time:minimum 6 hours6 ...