Brand:BINGLE; Model:B616; Type:Headphones (Headband); General Use:Computer,Mobile Phone,Media Player/Tablet; Function:FM Radio,With Microphone; Communication:Wireless 2.4GHz; Connectors:3.5mm; Material:Plastic; Color:Black; Dimensions (cm):17.515.56.5; Weight (kg):0.27; Speaker Diameter:Φ40mm; Speaker Sensitivity:Φ40mm; Speaker Impendance:32Ω±15%; Speaker Frequency Response:10Hz-20KHz; Plug Type:Wrieless or 3.5mm; Max. Input Power:2.0~3.0V; Operating Range:20M~30M; Working Voltage:2.0~3.0VDC; Battery:2AAA