Karrimor bluetooth wireless sport earphones the karrimor bluetooth wireless sport earphones offer high resolution with a compact design featuring sure fit for maximum comfort and stability during exercise bluetooth bluetooth version bluetooth class 41 frequency band 24 ghz profiles hsp hfp a2dp aptx receiver distance 10m360 audio type in ear style noise isolation cvc60 noise reduction impedance 16 ohm speaker sensitivity 85 2db at 1khz out