ITEM NAME:Bluetooth Headset Clip-on Earphone Sport Earbud Earpiece Handsfree Black img *{margin:0;padding:0;.Bluetooth 4.0, Compatible with a variety of Bluetooth smartphones on the market. 1 x Fineblue F920 Earphone. Microphone size: 4X1.5mm. Microphone sensitivity:-42 +/-3db. Speaker impedance: 16Â ± 15%. Speaker size: 10X4mm.
